{
    "cdp_num": null,
    "comment": null,
    "conditions": [],
    "country": "Netherlands",
    "country_code_ISO": "NLD",
    "date_from": "2014-06-15 18:50:00",
    "date_to": null,
    "description": "CENTER OF HOLE IN STEEL PLATE",
    "geological": {
        "bedrock": {
            "condition": "FRESH",
            "type": "SEDIMENTARY"
        },
        "characteristic": "HOLOCENE SAND DEPOSIT",
        "distance_to_fault": null,
        "fault_zone": "NO",
        "fracture_spacing": "0"
    },
    "iers_domes": "13540M001",
    "instrument_collocation": [],
    "local_ties": [],
    "location": {
        "city": "Ameland",
        "coordinates": {
            "X": 3787664.302,
            "Y": 382392.264,
            "Z": 5100339.607,
            "altitude": 60.6,
            "lat": 53.44646139507611,
            "lon": 5.7648927041851294
        },
        "country": "Netherlands",
        "country_iso_code": "NLD",
        "description": "",
        "state": "",
        "tectonic": {
            "plate_name": "EURASIAN"
        }
    },
    "logs": {
        "contact": "TU Delft GNSS team (gnss-citg@tudelft.nl)",
        "date": "2025-07-07 00:00:00",
        "log_type": "UPDATE",
        "modified": "UNAVAILABLE",
        "previous": "UNAVAILABLE",
        "title": "AMEL00NLD.xml"
    },
    "marker": "AMEL",
    "monument": {
        "description": "STEEL MAST",
        "foundation": "CONCRETE BLOCK",
        "foundation_depth": null,
        "height": 12,
        "monument_inscription": "029309-11"
    },
    "monument_num": 0,
    "name": "Ameland",
    "receiver_num": 0,
    "station_contacts": [
        {
            "contact": {
                "agency": {
                    "abbreviation": "KAD",
                    "address": "Hofstraat 110\n7311KZ Apeldoorn\nNetherlands (the)",
                    "infos": "",
                    "name": "Kadaster",
                    "www": ""
                },
                "comment": "",
                "email": "rd@kadaster.nl",
                "name": "GI-RD",
                "phone": "+31 6 52481939",
                "role": "site_owner",
                "title": ""
            }
        },
        {
            "contact": {
                "agency": {
                    "abbreviation": "DUT",
                    "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                    "infos": "",
                    "name": "Delft University of Technology",
                    "www": ""
                },
                "comment": "",
                "email": "gnss-citg@tudelft.nl",
                "name": "TU Delft GNSS team",
                "phone": "+31 15 2784907",
                "role": "metadata_custodian",
                "title": ""
            }
        }
    ],
    "station_items": [
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "KAD",
                        "address": "Hofstraat 110\n7311KZ Apeldoorn\nNetherlands (the)",
                        "infos": "",
                        "name": "Kadaster",
                        "www": ""
                    },
                    "comment": "",
                    "email": "rd@kadaster.nl",
                    "name": "GI-RD",
                    "phone": "+31 6 52481939",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2014-06-15 18:50:00",
                "date_to": "2015-04-16 08:40:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2014-06-15 18:50:00",
                        "date_to": "2015-04-16 08:40:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR25"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2014-06-15 18:50:00",
                        "date_to": "2015-04-16 08:40:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1830309"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2014-06-15 18:50:00",
                        "date_to": "2015-04-16 08:40:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2014-06-15 18:50:00",
                        "date_to": "2015-04-16 08:40:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.00\/6.113"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2014-06-15 18:50:00",
                        "date_to": "2015-04-16 08:40:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2014-06-15 18:50:00",
                        "date_to": "2015-04-16 08:40:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "KAD",
                        "address": "Hofstraat 110\n7311KZ Apeldoorn\nNetherlands (the)",
                        "infos": "",
                        "name": "Kadaster",
                        "www": ""
                    },
                    "comment": "",
                    "email": "rd@kadaster.nl",
                    "name": "GI-RD",
                    "phone": "+31 6 52481939",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2015-04-16 08:40:00",
                "date_to": "2016-04-26 06:17:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2015-04-16 08:40:00",
                        "date_to": "2016-04-26 06:17:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR25"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2015-04-16 08:40:00",
                        "date_to": "2016-04-26 06:17:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1830309"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2015-04-16 08:40:00",
                        "date_to": "2016-04-26 06:17:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2015-04-16 08:40:00",
                        "date_to": "2016-04-26 06:17:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.11.1639\/6.403"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2015-04-16 08:40:00",
                        "date_to": "2016-04-26 06:17:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2015-04-16 08:40:00",
                        "date_to": "2016-04-26 06:17:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "KAD",
                        "address": "Hofstraat 110\n7311KZ Apeldoorn\nNetherlands (the)",
                        "infos": "",
                        "name": "Kadaster",
                        "www": ""
                    },
                    "comment": "",
                    "email": "rd@kadaster.nl",
                    "name": "GI-RD",
                    "phone": "+31 6 52481939",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2016-04-26 06:22:00",
                "date_to": "2016-07-13 07:21:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2016-04-26 06:22:00",
                        "date_to": "2016-07-13 07:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR25"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2016-04-26 06:22:00",
                        "date_to": "2016-07-13 07:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1830309"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2016-04-26 06:22:00",
                        "date_to": "2016-07-13 07:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2016-04-26 06:22:00",
                        "date_to": "2016-07-13 07:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.22\/6.522"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2016-04-26 06:22:00",
                        "date_to": "2016-07-13 07:21:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2016-04-26 06:22:00",
                        "date_to": "2016-07-13 07:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "KAD",
                        "address": "Hofstraat 110\n7311KZ Apeldoorn\nNetherlands (the)",
                        "infos": "",
                        "name": "Kadaster",
                        "www": ""
                    },
                    "comment": "",
                    "email": "rd@kadaster.nl",
                    "name": "GI-RD",
                    "phone": "+31 6 52481939",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2016-07-13 07:21:00",
                "date_to": "2016-12-21 16:19:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2016-07-13 07:21:00",
                        "date_to": "2016-12-21 16:19:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR9"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2016-07-13 07:21:00",
                        "date_to": "2016-12-21 16:19:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5509R50048"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2016-07-13 07:21:00",
                        "date_to": "2016-12-21 16:19:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS+QZSS+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2016-07-13 07:21:00",
                        "date_to": "2016-12-21 16:19:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.10"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2016-07-13 07:21:00",
                        "date_to": "2016-12-21 16:19:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2016-07-13 07:21:00",
                        "date_to": "2016-12-21 16:19:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "KAD",
                        "address": "Hofstraat 110\n7311KZ Apeldoorn\nNetherlands (the)",
                        "infos": "",
                        "name": "Kadaster",
                        "www": ""
                    },
                    "comment": "",
                    "email": "rd@kadaster.nl",
                    "name": "GI-RD",
                    "phone": "+31 6 52481939",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2016-12-21 16:19:00",
                "date_to": "2017-08-07 05:42:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2016-12-21 16:19:00",
                        "date_to": "2017-08-07 05:42:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR9"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2016-12-21 16:19:00",
                        "date_to": "2017-08-07 05:42:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5509R50048"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2016-12-21 16:19:00",
                        "date_to": "2017-08-07 05:42:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS+QZSS+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2016-12-21 16:19:00",
                        "date_to": "2017-08-07 05:42:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.15"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2016-12-21 16:19:00",
                        "date_to": "2017-08-07 05:42:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2016-12-21 16:19:00",
                        "date_to": "2017-08-07 05:42:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "KAD",
                        "address": "Hofstraat 110\n7311KZ Apeldoorn\nNetherlands (the)",
                        "infos": "",
                        "name": "Kadaster",
                        "www": ""
                    },
                    "comment": "",
                    "email": "rd@kadaster.nl",
                    "name": "GI-RD",
                    "phone": "+31 6 52481939",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2017-08-07 05:48:00",
                "date_to": "2018-08-08 08:21:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2017-08-07 05:48:00",
                        "date_to": "2018-08-08 08:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR9"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2017-08-07 05:48:00",
                        "date_to": "2018-08-08 08:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5509R50048"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2017-08-07 05:48:00",
                        "date_to": "2018-08-08 08:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS+QZSS+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2017-08-07 05:48:00",
                        "date_to": "2018-08-08 08:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.22"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2017-08-07 05:48:00",
                        "date_to": "2018-08-08 08:21:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2017-08-07 05:48:00",
                        "date_to": "2018-08-08 08:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "KAD",
                        "address": "Hofstraat 110\n7311KZ Apeldoorn\nNetherlands (the)",
                        "infos": "",
                        "name": "Kadaster",
                        "www": ""
                    },
                    "comment": "",
                    "email": "rd@kadaster.nl",
                    "name": "GI-RD",
                    "phone": "+31 6 52481939",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2018-08-08 08:35:00",
                "date_to": "2018-11-30 08:44:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2018-08-08 08:35:00",
                        "date_to": "2018-11-30 08:44:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR9"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2018-08-08 08:35:00",
                        "date_to": "2018-11-30 08:44:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5509R50048"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2018-08-08 08:35:00",
                        "date_to": "2018-11-30 08:44:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS+QZSS+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2018-08-08 08:35:00",
                        "date_to": "2018-11-30 08:44:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.33"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2018-08-08 08:35:00",
                        "date_to": "2018-11-30 08:44:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2018-08-08 08:35:00",
                        "date_to": "2018-11-30 08:44:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "KAD",
                        "address": "Hofstraat 110\n7311KZ Apeldoorn\nNetherlands (the)",
                        "infos": "",
                        "name": "Kadaster",
                        "www": ""
                    },
                    "comment": "",
                    "email": "rd@kadaster.nl",
                    "name": "GI-RD",
                    "phone": "+31 6 52481939",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2018-11-30 08:44:00",
                "date_to": "2021-10-15 08:14:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2018-11-30 08:44:00",
                        "date_to": "2021-10-15 08:14:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR9"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2018-11-30 08:44:00",
                        "date_to": "2021-10-15 08:14:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5509R50048"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2018-11-30 08:44:00",
                        "date_to": "2021-10-15 08:14:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS+QZSS+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2018-11-30 08:44:00",
                        "date_to": "2021-10-15 08:14:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.37"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2018-11-30 08:44:00",
                        "date_to": "2021-10-15 08:14:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2018-11-30 08:44:00",
                        "date_to": "2021-10-15 08:14:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "KAD",
                        "address": "Hofstraat 110\n7311KZ Apeldoorn\nNetherlands (the)",
                        "infos": "",
                        "name": "Kadaster",
                        "www": ""
                    },
                    "comment": "",
                    "email": "rd@kadaster.nl",
                    "name": "GI-RD",
                    "phone": "+31 6 52481939",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2021-10-15 08:15:00",
                "date_to": "2022-06-09 13:50:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2021-10-15 08:15:00",
                        "date_to": "2022-06-09 13:50:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR9"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2021-10-15 08:15:00",
                        "date_to": "2022-06-09 13:50:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5509R50048"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2021-10-15 08:15:00",
                        "date_to": "2022-06-09 13:50:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS+QZSS+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2021-10-15 08:15:00",
                        "date_to": "2022-06-09 13:50:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.22"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2021-10-15 08:15:00",
                        "date_to": "2022-06-09 13:50:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2021-10-15 08:15:00",
                        "date_to": "2022-06-09 13:50:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "KAD",
                        "address": "Hofstraat 110\n7311KZ Apeldoorn\nNetherlands (the)",
                        "infos": "",
                        "name": "Kadaster",
                        "www": ""
                    },
                    "comment": "",
                    "email": "rd@kadaster.nl",
                    "name": "GI-RD",
                    "phone": "+31 6 52481939",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2022-06-09 13:51:00",
                "date_to": "2024-08-15 07:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2022-06-09 13:51:00",
                        "date_to": "2024-08-15 07:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE NETR9"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2022-06-09 13:51:00",
                        "date_to": "2024-08-15 07:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5509R50048"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2022-06-09 13:51:00",
                        "date_to": "2024-08-15 07:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS+QZSS+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2022-06-09 13:51:00",
                        "date_to": "2024-08-15 07:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.54"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2022-06-09 13:51:00",
                        "date_to": "2024-08-15 07:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2022-06-09 13:51:00",
                        "date_to": "2024-08-15 07:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "KAD",
                        "address": "Hofstraat 110\n7311KZ Apeldoorn\nNetherlands (the)",
                        "infos": "",
                        "name": "Kadaster",
                        "www": ""
                    },
                    "comment": "",
                    "email": "rd@kadaster.nl",
                    "name": "GI-RD",
                    "phone": "+31 6 52481939",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2024-08-15 07:00:00",
                "date_to": "2025-07-07 20:10:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2024-08-15 07:00:00",
                        "date_to": "2025-07-07 20:10:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE ALLOY"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2024-08-15 07:00:00",
                        "date_to": "2025-07-07 20:10:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "6338R40114"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2024-08-15 07:00:00",
                        "date_to": "2025-07-07 20:10:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS+QZSS+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2024-08-15 07:00:00",
                        "date_to": "2025-07-07 20:10:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "6.23"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2024-08-15 07:00:00",
                        "date_to": "2025-07-07 20:10:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2024-08-15 07:00:00",
                        "date_to": "2025-07-07 20:10:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "KAD",
                        "address": "Hofstraat 110\n7311KZ Apeldoorn\nNetherlands (the)",
                        "infos": "",
                        "name": "Kadaster",
                        "www": ""
                    },
                    "comment": "",
                    "email": "rd@kadaster.nl",
                    "name": "GI-RD",
                    "phone": "+31 6 52481939",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2025-07-07 20:10:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2025-07-07 20:10:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE ALLOY"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2025-07-07 20:10:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "6338R40114"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2025-07-07 20:10:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS+QZSS+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2025-07-07 20:10:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "6.40"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2025-07-07 20:10:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2025-07-07 20:10:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NaN"
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Antenna calibrated by Geo++, calibration file is:\r\nLEIAR25.R4______LEIT_726701.atx",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "KAD",
                        "address": "Hofstraat 110\n7311KZ Apeldoorn\nNetherlands (the)",
                        "infos": "",
                        "name": "Kadaster",
                        "www": ""
                    },
                    "comment": "",
                    "email": "rd@kadaster.nl",
                    "name": "GI-RD",
                    "phone": "+31 6 52481939",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2014-06-15 18:50:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2014-06-15 18:50:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEIAR25.R4"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2014-06-15 18:50:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "726701"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2014-06-15 18:50:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BPA"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2014-06-15 18:50:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2014-06-15 18:50:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2014-06-15 18:50:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2014-06-15 18:50:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2014-06-15 18:50:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2014-06-15 18:50:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": "Antenna calibrated by Geo++, calibration file is:\r\nLEIAR25.R4______LEIT_726701.atx",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "KAD",
                        "address": "Hofstraat 110\n7311KZ Apeldoorn\nNetherlands (the)",
                        "infos": "",
                        "name": "Kadaster",
                        "www": ""
                    },
                    "comment": "",
                    "email": "rd@kadaster.nl",
                    "name": "GI-RD",
                    "phone": "+31 6 52481939",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2014-06-15 18:50:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2014-06-15 18:50:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEIT"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2014-06-15 18:50:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "KAD",
                        "address": "Hofstraat 110\n7311KZ Apeldoorn\nNetherlands (the)",
                        "infos": "",
                        "name": "Kadaster",
                        "www": ""
                    },
                    "comment": "",
                    "email": "rd@kadaster.nl",
                    "name": "GI-RD",
                    "phone": "+31 6 52481939",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2014-06-15 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "standard_type"
                        },
                        "date_from": "2014-06-15 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "INTERNAL"
                    },
                    {
                        "attribute": {
                            "name": "input_frequency"
                        },
                        "date_from": "2014-06-15 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "frequency_standard"
                }
            }
        }
    ],
    "station_networks": [
        {
            "name": "AGRS.NL"
        },
        {
            "name": "EPOS"
        }
    ],
    "station_type": "GNSS Continuous"
}