{
    "cdp_num": null,
    "comment": "2002-08-20 Format issues, antenna eccentricity,\nelevation cutoff setting and datacenter\ninformation has been corrected\/added.",
    "conditions": [],
    "country": "Greenland",
    "country_code_ISO": "GRL",
    "date_from": "2001-10-15 00:00:00",
    "date_to": null,
    "description": "BRASS NAIL",
    "geological": {
        "bedrock": {
            "condition": "JOINTED",
            "type": "METAMORPHIC"
        },
        "characteristic": "BEDROCK",
        "distance_to_fault": null,
        "fault_zone": "NO",
        "fracture_spacing": "over 200"
    },
    "iers_domes": "43007M001",
    "instrument_collocation": [],
    "local_ties": [],
    "location": {
        "city": "Qaqortoq \/ Julianehaab",
        "coordinates": {
            "X": 2170942.18,
            "Y": -2251829.95,
            "Z": 5539988.29,
            "altitude": 110.4,
            "lat": 60.71526288002425,
            "lon": -46.047761692457144
        },
        "country": "Greenland",
        "country_iso_code": "GRL",
        "description": "Position origins from one week processing\n(GPS week 1136)",
        "state": "Greenland",
        "tectonic": {
            "plate_name": "NORTH AMERICAN"
        }
    },
    "logs": {
        "contact": "DTU Space GNSS Team (dtuspace-gnss@space.dtu.dk)",
        "date": "2026-03-27 00:00:00",
        "log_type": "UPDATE",
        "modified": "UNAVAILABLE",
        "previous": "UNAVAILABLE",
        "title": "QAQ100GRL.xml"
    },
    "marker": "QAQ1",
    "monument": {
        "description": "2.5 meter concrete pillar with brass nail",
        "foundation": "STEEL RODS",
        "foundation_depth": null,
        "height": 2.5,
        "monument_inscription": null
    },
    "monument_num": 0,
    "name": "Qaqortoq",
    "receiver_num": 0,
    "station_contacts": [
        {
            "contact": {
                "agency": {
                    "abbreviation": "DTU Space",
                    "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                    "infos": "",
                    "name": "National Space Institute",
                    "www": ""
                },
                "comment": "",
                "email": "dtuspace-gnss@space.dtu.dk",
                "name": "DTU Space GNSS Team",
                "phone": "",
                "role": "site_owner",
                "title": ""
            }
        },
        {
            "contact": {
                "agency": {
                    "abbreviation": "DTU Space",
                    "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                    "infos": "",
                    "name": "National Space Institute",
                    "www": ""
                },
                "comment": "",
                "email": "dtuspace-gnss@space.dtu.dk",
                "name": "DTU Space GNSS Team",
                "phone": "",
                "role": "metadata_custodian",
                "title": ""
            }
        },
        {
            "contact": {
                "agency": {
                    "abbreviation": "DTU Space",
                    "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                    "infos": "",
                    "name": "National Space Institute",
                    "www": ""
                },
                "comment": "",
                "email": "dtuspace-gnss@space.dtu.dk",
                "name": "DTU Space GNSS Team",
                "phone": "",
                "role": "site_contact",
                "title": ""
            }
        }
    ],
    "station_items": [
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2001-10-15 00:00:00",
                "date_to": "2005-08-01 19:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2001-10-15 00:00:00",
                        "date_to": "2005-08-01 19:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "ASHTECH UZ-12"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2001-10-15 00:00:00",
                        "date_to": "2005-08-01 19:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "ZR20012301"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2001-10-15 00:00:00",
                        "date_to": "2005-08-01 19:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2001-10-15 00:00:00",
                        "date_to": "2005-08-01 19:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "CJ00"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2001-10-15 00:00:00",
                        "date_to": "2005-08-01 19:00:00",
                        "value_date": null,
                        "value_numeric": 5,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2001-10-15 00:00:00",
                        "date_to": "2005-08-01 19:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2005-08-01 19:07:00",
                "date_to": "2006-02-23 13:59:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2005-08-01 19:07:00",
                        "date_to": "2006-02-23 13:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "ASHTECH Z-XII3"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2005-08-01 19:07:00",
                        "date_to": "2006-02-23 13:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "02259"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2005-08-01 19:07:00",
                        "date_to": "2006-02-23 13:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2005-08-01 19:07:00",
                        "date_to": "2006-02-23 13:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1L00"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2005-08-01 19:07:00",
                        "date_to": "2006-02-23 13:59:00",
                        "value_date": null,
                        "value_numeric": 5,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2005-08-01 19:07:00",
                        "date_to": "2006-02-23 13:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2006-02-23 14:00:00",
                "date_to": "2014-10-05 18:59:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2006-02-23 14:00:00",
                        "date_to": "2014-10-05 18:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "ASHTECH UZ-12"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2006-02-23 14:00:00",
                        "date_to": "2014-10-05 18:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "ZR20012301"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2006-02-23 14:00:00",
                        "date_to": "2014-10-05 18:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2006-02-23 14:00:00",
                        "date_to": "2014-10-05 18:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "CJ00"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2006-02-23 14:00:00",
                        "date_to": "2014-10-05 18:59:00",
                        "value_date": null,
                        "value_numeric": 5,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2006-02-23 14:00:00",
                        "date_to": "2014-10-05 18:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2014-10-05 20:00:00",
                "date_to": "2015-04-23 11:08:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2014-10-05 20:00:00",
                        "date_to": "2015-04-23 11:08:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "JAVAD TRE_G3T SIGMA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2014-10-05 20:00:00",
                        "date_to": "2015-04-23 11:08:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "00813"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2014-10-05 20:00:00",
                        "date_to": "2015-04-23 11:08:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2014-10-05 20:00:00",
                        "date_to": "2015-04-23 11:08:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.5.1 Mar,04,2013"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2014-10-05 20:00:00",
                        "date_to": "2015-04-23 11:08:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2014-10-05 20:00:00",
                        "date_to": "2015-04-23 11:08:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2015-04-23 11:08:00",
                "date_to": "2015-10-08 12:10:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2015-04-23 11:08:00",
                        "date_to": "2015-10-08 12:10:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "JAVAD TRE_G3T SIGMA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2015-04-23 11:08:00",
                        "date_to": "2015-10-08 12:10:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "00813"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2015-04-23 11:08:00",
                        "date_to": "2015-10-08 12:10:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2015-04-23 11:08:00",
                        "date_to": "2015-10-08 12:10:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.5.9 Apr,21,2015"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2015-04-23 11:08:00",
                        "date_to": "2015-10-08 12:10:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2015-04-23 11:08:00",
                        "date_to": "2015-10-08 12:10:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2015-10-08 12:10:00",
                "date_to": "2015-11-13 10:31:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2015-10-08 12:10:00",
                        "date_to": "2015-11-13 10:31:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "JAVAD TRE_G3T SIGMA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2015-10-08 12:10:00",
                        "date_to": "2015-11-13 10:31:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "00813"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2015-10-08 12:10:00",
                        "date_to": "2015-11-13 10:31:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2015-10-08 12:10:00",
                        "date_to": "2015-11-13 10:31:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.5.9 Apr,21,2015"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2015-10-08 12:10:00",
                        "date_to": "2015-11-13 10:31:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2015-10-08 12:10:00",
                        "date_to": "2015-11-13 10:31:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2015-11-13 10:31:00",
                "date_to": "2016-06-02 13:05:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2015-11-13 10:31:00",
                        "date_to": "2016-06-02 13:05:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "JAVAD TRE_G3T SIGMA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2015-11-13 10:31:00",
                        "date_to": "2016-06-02 13:05:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "00813"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2015-11-13 10:31:00",
                        "date_to": "2016-06-02 13:05:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2015-11-13 10:31:00",
                        "date_to": "2016-06-02 13:05:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.5.12 Nov,12,2015"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2015-11-13 10:31:00",
                        "date_to": "2016-06-02 13:05:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2015-11-13 10:31:00",
                        "date_to": "2016-06-02 13:05:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2016-06-02 13:05:00",
                "date_to": "2016-09-26 12:08:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2016-06-02 13:05:00",
                        "date_to": "2016-09-26 12:08:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "JAVAD TRE_G3T SIGMA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2016-06-02 13:05:00",
                        "date_to": "2016-09-26 12:08:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "00813"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2016-06-02 13:05:00",
                        "date_to": "2016-09-26 12:08:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2016-06-02 13:05:00",
                        "date_to": "2016-09-26 12:08:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.5.13 May,18,2016"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2016-06-02 13:05:00",
                        "date_to": "2016-09-26 12:08:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2016-06-02 13:05:00",
                        "date_to": "2016-09-26 12:08:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2016-09-26 12:12:00",
                "date_to": "2017-03-07 11:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2016-09-26 12:12:00",
                        "date_to": "2017-03-07 11:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "JAVAD TRE_G3T SIGMA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2016-09-26 12:12:00",
                        "date_to": "2017-03-07 11:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "00813"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2016-09-26 12:12:00",
                        "date_to": "2017-03-07 11:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2016-09-26 12:12:00",
                        "date_to": "2017-03-07 11:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.5.14 Sep,22,2016"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2016-09-26 12:12:00",
                        "date_to": "2017-03-07 11:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2016-09-26 12:12:00",
                        "date_to": "2017-03-07 11:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2017-03-07 11:00:00",
                "date_to": "2017-06-22 11:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2017-03-07 11:00:00",
                        "date_to": "2017-06-22 11:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "JAVAD TRE_G3T SIGMA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2017-03-07 11:00:00",
                        "date_to": "2017-06-22 11:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "00813"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2017-03-07 11:00:00",
                        "date_to": "2017-06-22 11:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2017-03-07 11:00:00",
                        "date_to": "2017-06-22 11:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.6.9 Nov,28,2016"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2017-03-07 11:00:00",
                        "date_to": "2017-06-22 11:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2017-03-07 11:00:00",
                        "date_to": "2017-06-22 11:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2017-06-22 11:00:00",
                "date_to": "2017-08-14 11:20:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2017-06-22 11:00:00",
                        "date_to": "2017-08-14 11:20:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "JAVAD TRE_G3T SIGMA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2017-06-22 11:00:00",
                        "date_to": "2017-08-14 11:20:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "00813"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2017-06-22 11:00:00",
                        "date_to": "2017-08-14 11:20:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2017-06-22 11:00:00",
                        "date_to": "2017-08-14 11:20:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.6.9 Nov,28,2016"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2017-06-22 11:00:00",
                        "date_to": "2017-08-14 11:20:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2017-06-22 11:00:00",
                        "date_to": "2017-08-14 11:20:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2017-08-14 11:22:00",
                "date_to": "2018-11-05 10:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2017-08-14 11:22:00",
                        "date_to": "2018-11-05 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "JAVAD TRE_G3T SIGMA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2017-08-14 11:22:00",
                        "date_to": "2018-11-05 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "00813"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2017-08-14 11:22:00",
                        "date_to": "2018-11-05 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2017-08-14 11:22:00",
                        "date_to": "2018-11-05 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.6.9 Nov,28,2016"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2017-08-14 11:22:00",
                        "date_to": "2018-11-05 10:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2017-08-14 11:22:00",
                        "date_to": "2018-11-05 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2018-11-05 14:10:00",
                "date_to": "2019-06-21 11:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2018-11-05 14:10:00",
                        "date_to": "2019-06-21 11:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "JAVAD TRE_G3T SIGMA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2018-11-05 14:10:00",
                        "date_to": "2019-06-21 11:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "00813"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2018-11-05 14:10:00",
                        "date_to": "2019-06-21 11:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2018-11-05 14:10:00",
                        "date_to": "2019-06-21 11:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.6.13 Feb,12,2018"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2018-11-05 14:10:00",
                        "date_to": "2019-06-21 11:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2018-11-05 14:10:00",
                        "date_to": "2019-06-21 11:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2019-06-21 12:00:00",
                "date_to": "2019-09-26 09:30:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2019-06-21 12:00:00",
                        "date_to": "2019-09-26 09:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "SEPT POLARX5S"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2019-06-21 12:00:00",
                        "date_to": "2019-09-26 09:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3048404"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2019-06-21 12:00:00",
                        "date_to": "2019-09-26 09:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2019-06-21 12:00:00",
                        "date_to": "2019-09-26 09:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.2.0"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2019-06-21 12:00:00",
                        "date_to": "2019-09-26 09:30:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2019-06-21 12:00:00",
                        "date_to": "2019-09-26 09:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2019-09-26 09:35:00",
                "date_to": "2019-10-24 11:21:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2019-09-26 09:35:00",
                        "date_to": "2019-10-24 11:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "SEPT POLARX5S"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2019-09-26 09:35:00",
                        "date_to": "2019-10-24 11:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3048404"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2019-09-26 09:35:00",
                        "date_to": "2019-10-24 11:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2019-09-26 09:35:00",
                        "date_to": "2019-10-24 11:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.3.0"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2019-09-26 09:35:00",
                        "date_to": "2019-10-24 11:21:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2019-09-26 09:35:00",
                        "date_to": "2019-10-24 11:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2019-10-24 12:00:00",
                "date_to": "2020-02-05 08:40:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2019-10-24 12:00:00",
                        "date_to": "2020-02-05 08:40:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "SEPT POLARX5"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2019-10-24 12:00:00",
                        "date_to": "2020-02-05 08:40:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3023005"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2019-10-24 12:00:00",
                        "date_to": "2020-02-05 08:40:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2019-10-24 12:00:00",
                        "date_to": "2020-02-05 08:40:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.3.0"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2019-10-24 12:00:00",
                        "date_to": "2020-02-05 08:40:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2019-10-24 12:00:00",
                        "date_to": "2020-02-05 08:40:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2020-02-05 08:45:00",
                "date_to": "2020-06-08 23:59:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2020-02-05 08:45:00",
                        "date_to": "2020-06-08 23:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "SEPT POLARX5"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2020-02-05 08:45:00",
                        "date_to": "2020-06-08 23:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3023005"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2020-02-05 08:45:00",
                        "date_to": "2020-06-08 23:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2020-02-05 08:45:00",
                        "date_to": "2020-06-08 23:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.3.2"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2020-02-05 08:45:00",
                        "date_to": "2020-06-08 23:59:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2020-02-05 08:45:00",
                        "date_to": "2020-06-08 23:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2020-06-09 00:00:00",
                "date_to": "2020-10-06 08:30:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2020-06-09 00:00:00",
                        "date_to": "2020-10-06 08:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "SEPT POLARX5"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2020-06-09 00:00:00",
                        "date_to": "2020-10-06 08:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3023005"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2020-06-09 00:00:00",
                        "date_to": "2020-10-06 08:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS+QZSS+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2020-06-09 00:00:00",
                        "date_to": "2020-10-06 08:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.3.2"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2020-06-09 00:00:00",
                        "date_to": "2020-10-06 08:30:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2020-06-09 00:00:00",
                        "date_to": "2020-10-06 08:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2020-10-06 08:30:00",
                "date_to": "2021-01-13 16:45:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2020-10-06 08:30:00",
                        "date_to": "2021-01-13 16:45:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "SEPT POLARX5"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2020-10-06 08:30:00",
                        "date_to": "2021-01-13 16:45:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3023005"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2020-10-06 08:30:00",
                        "date_to": "2021-01-13 16:45:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS+QZSS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2020-10-06 08:30:00",
                        "date_to": "2021-01-13 16:45:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.3.2"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2020-10-06 08:30:00",
                        "date_to": "2021-01-13 16:45:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2020-10-06 08:30:00",
                        "date_to": "2021-01-13 16:45:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2021-01-13 16:45:00",
                "date_to": "2021-07-26 23:24:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2021-01-13 16:45:00",
                        "date_to": "2021-07-26 23:24:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "SEPT POLARX5"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2021-01-13 16:45:00",
                        "date_to": "2021-07-26 23:24:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3023005"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2021-01-13 16:45:00",
                        "date_to": "2021-07-26 23:24:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS+QZSS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2021-01-13 16:45:00",
                        "date_to": "2021-07-26 23:24:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.4.0"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2021-01-13 16:45:00",
                        "date_to": "2021-07-26 23:24:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2021-01-13 16:45:00",
                        "date_to": "2021-07-26 23:24:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2021-07-26 23:24:00",
                "date_to": "2022-09-09 09:55:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2021-07-26 23:24:00",
                        "date_to": "2022-09-09 09:55:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "SEPT POLARX5"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2021-07-26 23:24:00",
                        "date_to": "2022-09-09 09:55:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3023005"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2021-07-26 23:24:00",
                        "date_to": "2022-09-09 09:55:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS+QZSS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2021-07-26 23:24:00",
                        "date_to": "2022-09-09 09:55:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.4.0-patch1"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2021-07-26 23:24:00",
                        "date_to": "2022-09-09 09:55:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2021-07-26 23:24:00",
                        "date_to": "2022-09-09 09:55:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2022-09-09 09:55:00",
                "date_to": "2023-01-10 17:25:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2022-09-09 09:55:00",
                        "date_to": "2023-01-10 17:25:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "SEPT POLARX5"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2022-09-09 09:55:00",
                        "date_to": "2023-01-10 17:25:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3023005"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2022-09-09 09:55:00",
                        "date_to": "2023-01-10 17:25:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS+QZSS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2022-09-09 09:55:00",
                        "date_to": "2023-01-10 17:25:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.5.0"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2022-09-09 09:55:00",
                        "date_to": "2023-01-10 17:25:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2022-09-09 09:55:00",
                        "date_to": "2023-01-10 17:25:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "QZSS SVs not in view",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2023-01-10 17:25:00",
                "date_to": "2025-05-26 07:30:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2023-01-10 17:25:00",
                        "date_to": "2025-05-26 07:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "SEPT POLARX5"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2023-01-10 17:25:00",
                        "date_to": "2025-05-26 07:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3023005"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2023-01-10 17:25:00",
                        "date_to": "2025-05-26 07:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2023-01-10 17:25:00",
                        "date_to": "2025-05-26 07:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.5.0"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2023-01-10 17:25:00",
                        "date_to": "2025-05-26 07:30:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2023-01-10 17:25:00",
                        "date_to": "2025-05-26 07:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2025-05-26 07:30:00",
                "date_to": "2026-03-27 10:46:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2025-05-26 07:30:00",
                        "date_to": "2026-03-27 10:46:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "SEPT POLARX5"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2025-05-26 07:30:00",
                        "date_to": "2026-03-27 10:46:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3023005"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2025-05-26 07:30:00",
                        "date_to": "2026-03-27 10:46:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2025-05-26 07:30:00",
                        "date_to": "2026-03-27 10:46:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.6.0"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2025-05-26 07:30:00",
                        "date_to": "2026-03-27 10:46:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2025-05-26 07:30:00",
                        "date_to": "2026-03-27 10:46:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Upgrade Firmware",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2026-03-27 10:46:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2026-03-27 10:46:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "SEPT POLARX5"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2026-03-27 10:46:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3023005"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2026-03-27 10:46:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2026-03-27 10:46:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.7.0"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2026-03-27 10:46:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2026-03-27 10:46:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2001-10-15 00:00:00",
                "date_to": "2003-08-26 14:12:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2001-10-15 00:00:00",
                        "date_to": "2003-08-26 14:12:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "ASH701941.B"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2001-10-15 00:00:00",
                        "date_to": "2003-08-26 14:12:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "13301"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2001-10-15 00:00:00",
                        "date_to": "2003-08-26 14:12:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BPA"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2001-10-15 00:00:00",
                        "date_to": "2003-08-26 14:12:00",
                        "value_date": null,
                        "value_numeric": 0.1206,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2001-10-15 00:00:00",
                        "date_to": "2003-08-26 14:12:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2001-10-15 00:00:00",
                        "date_to": "2003-08-26 14:12:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2001-10-15 00:00:00",
                        "date_to": "2003-08-26 14:12:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2001-10-15 00:00:00",
                        "date_to": "2003-08-26 14:12:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Andrew LDF4-50A"
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2001-10-15 00:00:00",
                        "date_to": "2003-08-26 14:12:00",
                        "value_date": null,
                        "value_numeric": 55,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2001-10-15 00:00:00",
                "date_to": "2003-08-26 14:12:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2001-10-15 00:00:00",
                        "date_to": "2003-08-26 14:12:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "SCIS"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2001-10-15 00:00:00",
                        "date_to": "2003-08-26 14:12:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2003-09-05 12:00:00",
                "date_to": "2003-09-29 11:20:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2003-09-05 12:00:00",
                        "date_to": "2003-09-29 11:20:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "ASH701941.B"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2003-09-05 12:00:00",
                        "date_to": "2003-09-29 11:20:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "13301"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2003-09-05 12:00:00",
                        "date_to": "2003-09-29 11:20:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BPA"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2003-09-05 12:00:00",
                        "date_to": "2003-09-29 11:20:00",
                        "value_date": null,
                        "value_numeric": 0.1206,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2003-09-05 12:00:00",
                        "date_to": "2003-09-29 11:20:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2003-09-05 12:00:00",
                        "date_to": "2003-09-29 11:20:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2003-09-05 12:00:00",
                        "date_to": "2003-09-29 11:20:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2003-09-05 12:00:00",
                        "date_to": "2003-09-29 11:20:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Andrew LDF4-50A"
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2003-09-05 12:00:00",
                        "date_to": "2003-09-29 11:20:00",
                        "value_date": null,
                        "value_numeric": 55,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2003-09-05 12:00:00",
                "date_to": "2003-09-29 11:20:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2003-09-05 12:00:00",
                        "date_to": "2003-09-29 11:20:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NONE"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2003-09-05 12:00:00",
                        "date_to": "2003-09-29 11:20:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2003-09-29 11:21:00",
                "date_to": "2003-12-30 17:08:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2003-09-29 11:21:00",
                        "date_to": "2003-12-30 17:08:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "ASH701941.B"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2003-09-29 11:21:00",
                        "date_to": "2003-12-30 17:08:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "13301"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2003-09-29 11:21:00",
                        "date_to": "2003-12-30 17:08:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BPA"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2003-09-29 11:21:00",
                        "date_to": "2003-12-30 17:08:00",
                        "value_date": null,
                        "value_numeric": 0.1206,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2003-09-29 11:21:00",
                        "date_to": "2003-12-30 17:08:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2003-09-29 11:21:00",
                        "date_to": "2003-12-30 17:08:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2003-09-29 11:21:00",
                        "date_to": "2003-12-30 17:08:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2003-09-29 11:21:00",
                        "date_to": "2003-12-30 17:08:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Andrew LDF4-50A"
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2003-09-29 11:21:00",
                        "date_to": "2003-12-30 17:08:00",
                        "value_date": null,
                        "value_numeric": 55,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2003-09-29 11:21:00",
                "date_to": "2003-12-30 17:08:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2003-09-29 11:21:00",
                        "date_to": "2003-12-30 17:08:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "SCIS"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2003-09-29 11:21:00",
                        "date_to": "2003-12-30 17:08:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2003-12-30 17:09:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2003-12-30 17:09:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "ASH701945E_M"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2003-12-30 17:09:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "24206"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2003-12-30 17:09:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BPA"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2003-12-30 17:09:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0.1206,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2003-12-30 17:09:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2003-12-30 17:09:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2003-12-30 17:09:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2003-12-30 17:09:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Andrew LDF4-50A"
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2003-12-30 17:09:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 55,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2003-12-30 17:09:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2003-12-30 17:09:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "SCIS"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2003-12-30 17:09:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": "DATUM EFRATOM FRK-LLN S\/N 18676",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2001-11-11 00:00:00",
                "date_to": "2005-09-04 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "standard_type"
                        },
                        "date_from": "2001-11-11 00:00:00",
                        "date_to": "2005-09-04 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "EXTERNAL RUBIDIUM"
                    },
                    {
                        "attribute": {
                            "name": "input_frequency"
                        },
                        "date_from": "2001-11-11 00:00:00",
                        "date_to": "2005-09-04 00:00:00",
                        "value_date": null,
                        "value_numeric": 5,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "frequency_standard"
                }
            }
        },
        {
            "item": {
                "comment": "receiver not locked to external frequency",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2005-09-05 00:00:00",
                "date_to": "2006-01-11 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "standard_type"
                        },
                        "date_from": "2005-09-05 00:00:00",
                        "date_to": "2006-01-11 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "INTERNAL"
                    },
                    {
                        "attribute": {
                            "name": "input_frequency"
                        },
                        "date_from": "2005-09-05 00:00:00",
                        "date_to": "2006-01-11 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "frequency_standard"
                }
            }
        },
        {
            "item": {
                "comment": "DATUM EFRATOM FRK-LLN S\/N 18676",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2006-01-11 00:00:00",
                "date_to": "2019-06-21 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "standard_type"
                        },
                        "date_from": "2006-01-11 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "EXTERNAL RUBIDIUM"
                    },
                    {
                        "attribute": {
                            "name": "input_frequency"
                        },
                        "date_from": "2006-01-11 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": 5,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "frequency_standard"
                }
            }
        },
        {
            "item": {
                "comment": "NONE",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2019-06-21 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "standard_type"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "INTERNAL"
                    },
                    {
                        "attribute": {
                            "name": "input_frequency"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "frequency_standard"
                }
            }
        },
        {
            "item": {
                "comment": "Serial U5020002",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2001-11-15 00:00:00",
                "date_to": "2019-06-21 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "HMP45D"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "VAISALA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": 300,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": 2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "aspiration"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": 5.578,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "humidity_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "Serial P5240847",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2019-06-21 00:00:00",
                "date_to": "2024-10-26 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "HUMICAP180"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "VAISALA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": 300,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": 1,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "aspiration"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": 5.578,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": "2018-12-01 00:00:00",
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "humidity_sensor"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2024-10-26 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "PTU303"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "VAISALA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "D231082"
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 300,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "aspiration"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "UNASPIRATED"
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 5.578,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": "2024-10-01 00:00:00",
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "humidity_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "Serial U5120002",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2001-11-15 00:00:00",
                "date_to": "2019-06-21 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "PTU200 Class A"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "VAISALA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": 300,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": 0.15,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": 5.578,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "pressure_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "Serial P5240847",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2019-06-21 00:00:00",
                "date_to": "2024-10-26 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "PTU303"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "VAISALA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": 300,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": 0.3,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": 5.578,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": "2018-12-01 00:00:00",
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "pressure_sensor"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2024-10-26 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "PTU303"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "VAISALA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "D231082"
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 300,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0.3,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 5.578,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": "2024-10-01 00:00:00",
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "pressure_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "Serial U5120002",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2001-11-15 00:00:00",
                "date_to": "2019-06-21 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "PTU200"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "VAISALA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": 300,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": 0.2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "aspiration"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": 5.578,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2001-11-15 00:00:00",
                        "date_to": "2019-06-21 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "temperature_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "Serial P5240847",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2019-06-21 00:00:00",
                "date_to": "2024-10-26 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "PTU303"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "VAISALA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": 300,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": 0.2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "aspiration"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": null,
                        "value_numeric": 5.578,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2019-06-21 00:00:00",
                        "date_to": "2024-10-26 00:00:00",
                        "value_date": "2018-12-01 00:00:00",
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "temperature_sensor"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DTU Space",
                        "address": "Elektrovej bldg. 328\nDK-2800 Kongens Lyngby\nDenmark",
                        "infos": "",
                        "name": "National Space Institute",
                        "www": ""
                    },
                    "comment": "",
                    "email": "dtuspace-gnss@space.dtu.dk",
                    "name": "DTU Space GNSS Team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2024-10-26 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "PTU303"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "VAISALA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "D231082"
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 300,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0.2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "aspiration"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "UNASPIRATED"
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 5.578,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2024-10-26 00:00:00",
                        "date_to": null,
                        "value_date": "2024-10-01 00:00:00",
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "temperature_sensor"
                }
            }
        }
    ],
    "station_networks": [
        {
            "name": "EPN"
        },
        {
            "name": "EPOS"
        },
        {
            "name": "IGS"
        }
    ],
    "station_type": "GNSS Continuous"
}