{
    "cdp_num": null,
    "comment": null,
    "conditions": [],
    "country": "Poland",
    "country_code_ISO": "POL",
    "date_from": "2007-10-24 00:00:00",
    "date_to": null,
    "description": "STEEL SCREW ON TOP OF THE MAST",
    "geological": {
        "bedrock": {
            "condition": null,
            "type": null
        },
        "characteristic": null,
        "distance_to_fault": null,
        "fault_zone": null,
        "fracture_spacing": null
    },
    "iers_domes": "12227M001",
    "instrument_collocation": [],
    "local_ties": [],
    "location": {
        "city": "Redzikowo",
        "coordinates": {
            "X": 3550067,
            "Y": 1093332,
            "Z": 5167562,
            "altitude": 108.4,
            "lat": 54.472375928446816,
            "lon": 17.117525746225827
        },
        "country": "Poland",
        "country_iso_code": "POL",
        "description": "",
        "state": "Pomorskie Voivodship",
        "tectonic": {
            "plate_name": "EURASIAN"
        }
    },
    "logs": {
        "contact": "ASG-EUPOS Team (asgeupos@gugik.gov.pl)",
        "date": "2025-10-18 00:00:00",
        "log_type": "UPDATE",
        "modified": "UNAVAILABLE",
        "previous": "UNAVAILABLE",
        "title": "REDZ00POL.xml"
    },
    "marker": "REDZ",
    "monument": {
        "description": "ALUMINIUM MAST",
        "foundation": "ROOF",
        "foundation_depth": null,
        "height": 0.8,
        "monument_inscription": null
    },
    "monument_num": 0,
    "name": "Redzikowo",
    "receiver_num": 0,
    "station_contacts": [
        {
            "contact": {
                "agency": {
                    "abbreviation": "GUGiK",
                    "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                    "infos": "",
                    "name": "Head Office of Geodesy and Cartography",
                    "www": ""
                },
                "comment": "",
                "email": "asgeupos@gugik.gov.pl",
                "name": "ASG-EUPOS Team",
                "phone": "+48 22 563 13 46",
                "role": "site_owner",
                "title": ""
            }
        },
        {
            "contact": {
                "agency": {
                    "abbreviation": "ASGEUPOS",
                    "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                    "infos": "",
                    "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                    "www": ""
                },
                "comment": "",
                "email": "asgeupos@gugik.gov.pl",
                "name": "ASG-EUPOS Team",
                "phone": "",
                "role": "metadata_custodian",
                "title": ""
            }
        },
        {
            "contact": {
                "agency": {
                    "abbreviation": "ASGEUPOS",
                    "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                    "infos": "",
                    "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                    "www": ""
                },
                "comment": "",
                "email": "biuro.eupos@gugik.gov.pl",
                "name": "ASG-EUPOS office",
                "phone": "+48 22 563 13 46",
                "role": "site_contact",
                "title": ""
            }
        }
    ],
    "station_items": [
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2007-12-07 00:00:00",
                "date_to": "2008-06-26 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": "2008-06-26 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR5"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": "2008-06-26 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "4722K06118"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": "2008-06-26 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": "2008-06-26 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Nav  3.32 \/ Boot  3"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": "2008-06-26 00:00:00",
                        "value_date": null,
                        "value_numeric": 5,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": "2008-06-26 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2008-06-26 00:00:00",
                "date_to": "2009-02-24 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2008-06-26 00:00:00",
                        "date_to": "2009-02-24 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR5"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2008-06-26 00:00:00",
                        "date_to": "2009-02-24 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "4722K06118"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2008-06-26 00:00:00",
                        "date_to": "2009-02-24 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2008-06-26 00:00:00",
                        "date_to": "2009-02-24 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Nav  3.64 \/ Boot  3"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2008-06-26 00:00:00",
                        "date_to": "2009-02-24 00:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2008-06-26 00:00:00",
                        "date_to": "2009-02-24 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Before DOY 143\/2011, due to software limitations\r\nat the OC, the firmware version in the RINEX\r\nobservation files was truncated to\r\nNav  3.80 \/ Boot  3.",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2009-02-24 00:00:00",
                "date_to": "2011-07-08 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2009-02-24 00:00:00",
                        "date_to": "2011-07-08 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR5"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2009-02-24 00:00:00",
                        "date_to": "2011-07-08 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "4722K06118"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2009-02-24 00:00:00",
                        "date_to": "2011-07-08 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2009-02-24 00:00:00",
                        "date_to": "2011-07-08 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Nav 3.8 \/ Boot 3.56"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2009-02-24 00:00:00",
                        "date_to": "2011-07-08 00:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2009-02-24 00:00:00",
                        "date_to": "2011-07-08 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2011-07-08 00:00:00",
                "date_to": "2014-10-29 10:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2011-07-08 00:00:00",
                        "date_to": "2014-10-29 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR5"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2011-07-08 00:00:00",
                        "date_to": "2014-10-29 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "4722K06118"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2011-07-08 00:00:00",
                        "date_to": "2014-10-29 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2011-07-08 00:00:00",
                        "date_to": "2014-10-29 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Nav 4.41 \/ Boot 4.18"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2011-07-08 00:00:00",
                        "date_to": "2014-10-29 10:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2011-07-08 00:00:00",
                        "date_to": "2014-10-29 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2014-10-29 11:30:00",
                "date_to": "2015-06-12 06:29:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2014-10-29 11:30:00",
                        "date_to": "2015-06-12 06:29:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR9"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2014-10-29 11:30:00",
                        "date_to": "2015-06-12 06:29:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5417R48251"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2014-10-29 11:30:00",
                        "date_to": "2015-06-12 06:29:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2014-10-29 11:30:00",
                        "date_to": "2015-06-12 06:29:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "4.85"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2014-10-29 11:30:00",
                        "date_to": "2015-06-12 06:29:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2014-10-29 11:30:00",
                        "date_to": "2015-06-12 06:29:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2015-06-12 06:30:00",
                "date_to": "2016-05-12 06:50:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2015-06-12 06:30:00",
                        "date_to": "2016-05-12 06:50:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR9"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2015-06-12 06:30:00",
                        "date_to": "2016-05-12 06:50:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5417R48251"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2015-06-12 06:30:00",
                        "date_to": "2016-05-12 06:50:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2015-06-12 06:30:00",
                        "date_to": "2016-05-12 06:50:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.01"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2015-06-12 06:30:00",
                        "date_to": "2016-05-12 06:50:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2015-06-12 06:30:00",
                        "date_to": "2016-05-12 06:50:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Firmware update",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2016-05-12 07:00:00",
                "date_to": "2016-05-19 06:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2016-05-12 07:00:00",
                        "date_to": "2016-05-19 06:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR9"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2016-05-12 07:00:00",
                        "date_to": "2016-05-19 06:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5417R48251"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2016-05-12 07:00:00",
                        "date_to": "2016-05-19 06:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2016-05-12 07:00:00",
                        "date_to": "2016-05-19 06:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.10"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2016-05-12 07:00:00",
                        "date_to": "2016-05-19 06:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2016-05-12 07:00:00",
                        "date_to": "2016-05-19 06:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Satellite system update",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2016-05-19 06:00:00",
                "date_to": "2018-08-29 07:20:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2016-05-19 06:00:00",
                        "date_to": "2018-08-29 07:20:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR9"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2016-05-19 06:00:00",
                        "date_to": "2018-08-29 07:20:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5417R48251"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2016-05-19 06:00:00",
                        "date_to": "2018-08-29 07:20:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2016-05-19 06:00:00",
                        "date_to": "2018-08-29 07:20:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.10"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2016-05-19 06:00:00",
                        "date_to": "2018-08-29 07:20:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2016-05-19 06:00:00",
                        "date_to": "2018-08-29 07:20:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2018-08-29 07:45:00",
                "date_to": "2018-11-22 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2018-08-29 07:45:00",
                        "date_to": "2018-11-22 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR9"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2018-08-29 07:45:00",
                        "date_to": "2018-11-22 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5742R51354"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2018-08-29 07:45:00",
                        "date_to": "2018-11-22 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2018-08-29 07:45:00",
                        "date_to": "2018-11-22 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Nav 5.33 \/ Boot 5.33"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2018-08-29 07:45:00",
                        "date_to": "2018-11-22 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2018-08-29 07:45:00",
                        "date_to": "2018-11-22 12:00:00",
                        "value_date": null,
                        "value_numeric": 5,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Firmware update",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2018-11-22 12:05:00",
                "date_to": "2020-09-21 05:50:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2018-11-22 12:05:00",
                        "date_to": "2020-09-21 05:50:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR9"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2018-11-22 12:05:00",
                        "date_to": "2020-09-21 05:50:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5742R51354"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2018-11-22 12:05:00",
                        "date_to": "2020-09-21 05:50:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS+QZSS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2018-11-22 12:05:00",
                        "date_to": "2020-09-21 05:50:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Nav 5.37 \/ Boot 5.37"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2018-11-22 12:05:00",
                        "date_to": "2020-09-21 05:50:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2018-11-22 12:05:00",
                        "date_to": "2020-09-21 05:50:00",
                        "value_date": null,
                        "value_numeric": 5,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Firmware update",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2020-09-21 06:00:00",
                "date_to": "2023-05-12 11:15:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2020-09-21 06:00:00",
                        "date_to": "2023-05-12 11:15:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR9"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2020-09-21 06:00:00",
                        "date_to": "2023-05-12 11:15:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5742R51354"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2020-09-21 06:00:00",
                        "date_to": "2023-05-12 11:15:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS+QZSS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2020-09-21 06:00:00",
                        "date_to": "2023-05-12 11:15:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Nav 5.45 \/ Boot 5.45"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2020-09-21 06:00:00",
                        "date_to": "2023-05-12 11:15:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2020-09-21 06:00:00",
                        "date_to": "2023-05-12 11:15:00",
                        "value_date": null,
                        "value_numeric": 5,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Firmware update",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2023-05-12 11:20:00",
                "date_to": "2024-02-21 12:59:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2023-05-12 11:20:00",
                        "date_to": "2024-02-21 12:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR9"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2023-05-12 11:20:00",
                        "date_to": "2024-02-21 12:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5742R51354"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2023-05-12 11:20:00",
                        "date_to": "2024-02-21 12:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS+QZSS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2023-05-12 11:20:00",
                        "date_to": "2024-02-21 12:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Nav 5.60 \/ Boot 5.60"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2023-05-12 11:20:00",
                        "date_to": "2024-02-21 12:59:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2023-05-12 11:20:00",
                        "date_to": "2024-02-21 12:59:00",
                        "value_date": null,
                        "value_numeric": 5,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2024-02-21 13:06:00",
                "date_to": "2025-09-04 07:40:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2024-02-21 13:06:00",
                        "date_to": "2025-09-04 07:40:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE ALLOY"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2024-02-21 13:06:00",
                        "date_to": "2025-09-04 07:40:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "6338R40239"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2024-02-21 13:06:00",
                        "date_to": "2025-09-04 07:40:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2024-02-21 13:06:00",
                        "date_to": "2025-09-04 07:40:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Nav 6.23 \/ Boot 5.63"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2024-02-21 13:06:00",
                        "date_to": "2025-09-04 07:40:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2024-02-21 13:06:00",
                        "date_to": "2025-09-04 07:40:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Firmware update.",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2025-09-04 07:50:00",
                "date_to": "2025-10-18 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2025-09-04 07:50:00",
                        "date_to": "2025-10-18 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE ALLOY"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2025-09-04 07:50:00",
                        "date_to": "2025-10-18 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "6338R40239"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2025-09-04 07:50:00",
                        "date_to": "2025-10-18 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2025-09-04 07:50:00",
                        "date_to": "2025-10-18 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Nav 6.40 \/ Boot 5.80"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2025-09-04 07:50:00",
                        "date_to": "2025-10-18 00:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2025-09-04 07:50:00",
                        "date_to": "2025-10-18 00:00:00",
                        "value_date": null,
                        "value_numeric": 5,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Firmware update.",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2025-10-18 16:10:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2025-10-18 16:10:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE ALLOY"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2025-10-18 16:10:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "6338R40239"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2025-10-18 16:10:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2025-10-18 16:10:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Nav 6.43 \/ Boot 5.83"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2025-10-18 16:10:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2025-10-18 16:10:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 5,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Individual calibration values available from:\r\n2007-12-07\r\nftp:\/\/epncb.oma.be\/pub\/station\/general\/epnc_08.atx",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2007-12-07 00:00:00",
                "date_to": "2014-10-29 10:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": "2014-10-29 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRM55971.00"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": "2014-10-29 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "30436524"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": "2014-10-29 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BAM"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": "2014-10-29 10:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": "2014-10-29 10:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": "2014-10-29 10:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": "2014-10-29 10:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": "2014-10-29 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "H1000"
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": "2014-10-29 10:00:00",
                        "value_date": null,
                        "value_numeric": 15,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": "Individual calibration values available from:\r\n2007-12-07\r\nftp:\/\/epncb.oma.be\/pub\/station\/general\/epnc_08.atx",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2007-12-07 00:00:00",
                "date_to": "2014-10-29 10:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": "2014-10-29 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TZGD"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": "2014-10-29 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": "Individual calibration values available from:\r\n2014-10-29\r\nftp:\/\/epncb.oma.be\/pub\/station\/general\/epnc_08.atx",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2014-10-29 11:30:00",
                "date_to": "2016-07-04 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2014-10-29 11:30:00",
                        "date_to": "2016-07-04 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRM59900.00"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2014-10-29 11:30:00",
                        "date_to": "2016-07-04 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5319361156"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2014-10-29 11:30:00",
                        "date_to": "2016-07-04 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BPA"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2014-10-29 11:30:00",
                        "date_to": "2016-07-04 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2014-10-29 11:30:00",
                        "date_to": "2016-07-04 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2014-10-29 11:30:00",
                        "date_to": "2016-07-04 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2014-10-29 11:30:00",
                        "date_to": "2016-07-04 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2014-10-29 11:30:00",
                        "date_to": "2016-07-04 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "H1000"
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2014-10-29 11:30:00",
                        "date_to": "2016-07-04 12:00:00",
                        "value_date": null,
                        "value_numeric": 15,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": "Individual calibration values available from:\r\n2014-10-29\r\nftp:\/\/epncb.oma.be\/pub\/station\/general\/epnc_08.atx",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2014-10-29 11:30:00",
                "date_to": "2016-07-04 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2014-10-29 11:30:00",
                        "date_to": "2016-07-04 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "SCIS"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2014-10-29 11:30:00",
                        "date_to": "2016-07-04 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1613"
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": "Temporary antenna for repair of TRM59900.00\r\nSCIS.",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2016-07-12 09:20:00",
                "date_to": "2016-11-07 14:30:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2016-07-12 09:20:00",
                        "date_to": "2016-11-07 14:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRM55970.00"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2016-07-12 09:20:00",
                        "date_to": "2016-11-07 14:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "2312127081"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2016-07-12 09:20:00",
                        "date_to": "2016-11-07 14:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BAM"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2016-07-12 09:20:00",
                        "date_to": "2016-11-07 14:30:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2016-07-12 09:20:00",
                        "date_to": "2016-11-07 14:30:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2016-07-12 09:20:00",
                        "date_to": "2016-11-07 14:30:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2016-07-12 09:20:00",
                        "date_to": "2016-11-07 14:30:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2016-07-12 09:20:00",
                        "date_to": "2016-11-07 14:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "H1000"
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2016-07-12 09:20:00",
                        "date_to": "2016-11-07 14:30:00",
                        "value_date": null,
                        "value_numeric": 15,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": "Temporary antenna for repair of TRM59900.00\r\nSCIS.",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2016-07-12 09:20:00",
                "date_to": "2016-11-07 14:30:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2016-07-12 09:20:00",
                        "date_to": "2016-11-07 14:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NONE"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2016-07-12 09:20:00",
                        "date_to": "2016-11-07 14:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": "Individual calibration values available from:\r\n2014-10-29\r\nftp:\/\/epncb.oma.be\/pub\/station\/general\/epnc_08.atx",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2016-11-07 14:30:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2016-11-07 14:30:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRM59900.00"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2016-11-07 14:30:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5319361156"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2016-11-07 14:30:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BPA"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2016-11-07 14:30:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2016-11-07 14:30:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2016-11-07 14:30:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2016-11-07 14:30:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2016-11-07 14:30:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "H1000"
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2016-11-07 14:30:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 15,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": "Individual calibration values available from:\r\n2014-10-29\r\nftp:\/\/epncb.oma.be\/pub\/station\/general\/epnc_08.atx",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2016-11-07 14:30:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2016-11-07 14:30:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "SCIS"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2016-11-07 14:30:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1613"
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2007-12-07 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "standard_type"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "INTERNAL"
                    },
                    {
                        "attribute": {
                            "name": "input_frequency"
                        },
                        "date_from": "2007-12-07 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "frequency_standard"
                }
            }
        },
        {
            "item": {
                "comment": "sensor below GNSS antenna",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2008-07-31 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "MET4A"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Paroscientific Inc."
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "105148"
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 180,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "aspiration"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "FAN"
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": -2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": "2008-05-28 00:00:00",
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "humidity_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "sensor below GNSS antenna",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2008-07-31 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "MET4A"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Paroscientific Inc."
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "105148"
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 180,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0.08,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": -2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": "2008-05-28 00:00:00",
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "pressure_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "sensor below GNSS antenna",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "asgeupos@gugik.gov.pl",
                    "name": "ASG-EUPOS Team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "ASGEUPOS",
                        "address": "Zurawia 6\/12\n00-926 Warsaw\nPoland",
                        "infos": "",
                        "name": "ASG-EUPOS Management Center\r\nHead Office of Geodesy and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "biuro.eupos@gugik.gov.pl",
                    "name": "ASG-EUPOS office",
                    "phone": "+48 22 563 13 46",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2008-07-31 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "MET4A"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Paroscientific Inc."
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "105148"
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 180,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0.2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "aspiration"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "FAN"
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": -2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2008-07-31 00:00:00",
                        "date_to": null,
                        "value_date": "2008-05-28 00:00:00",
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "temperature_sensor"
                }
            }
        }
    ],
    "station_networks": [
        {
            "name": "ASGEUPOS"
        },
        {
            "name": "EPN"
        },
        {
            "name": "EPOS"
        }
    ],
    "station_type": "GNSS Continuous"
}