{
    "cdp_num": null,
    "comment": "Steel tower of 3 m height on a concrete block\r\nin the terrace of the Ingenieros Agronomos\r\nbuilding of the Universidad of Castilla La\r\nMancha in Albacete",
    "conditions": [],
    "country": "Spain",
    "country_code_ISO": "ESP",
    "date_from": "2002-06-20 00:00:00",
    "date_to": null,
    "description": "Brass plate on the concrete block",
    "geological": {
        "bedrock": {
            "condition": "WEATHERED",
            "type": "SEDIMENTARY"
        },
        "characteristic": "CONGLOMERATE",
        "distance_to_fault": null,
        "fault_zone": "No",
        "fracture_spacing": null
    },
    "iers_domes": "13452M001",
    "instrument_collocation": [],
    "local_ties": [],
    "location": {
        "city": "Albacete",
        "coordinates": {
            "X": 4962848.132,
            "Y": -160854.394,
            "Z": 3990884.136,
            "altitude": 751.6,
            "lat": 38.9779150278,
            "lon": -1.8564043083000001
        },
        "country": "Spain",
        "country_iso_code": "ESP",
        "description": "ALBA is a reference point of the Spanish GPS\r\nPermanent Network raised by the Instituto\r\nGeografico Nacional",
        "state": "Albacete",
        "tectonic": {
            "plate_name": "EURASIAN"
        }
    },
    "logs": {
        "contact": "ergnss@transportes.gob.es",
        "date": "2024-03-15 00:00:00",
        "log_type": "UPDATE",
        "modified": "UNAVAILABLE",
        "previous": "UNAVAILABLE",
        "title": "ALBA00ESP.xml"
    },
    "marker": "ALBA",
    "monument": {
        "description": "Steel tower on a concrete block",
        "foundation": "Concrete",
        "foundation_depth": null,
        "height": 3,
        "monument_inscription": "None"
    },
    "monument_num": 0,
    "name": "Albacete",
    "receiver_num": 0,
    "station_contacts": [
        {
            "contact": {
                "agency": {
                    "abbreviation": "IGE",
                    "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                    "infos": "",
                    "name": "Instituto Geografico Nacional de Espana",
                    "www": ""
                },
                "comment": "",
                "email": "ergnss@mitma.es",
                "name": "Geodesy Department \u2013 IGN",
                "phone": "",
                "role": "site_owner",
                "title": ""
            }
        },
        {
            "contact": {
                "agency": {
                    "abbreviation": "IGE",
                    "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                    "infos": "",
                    "name": "Instituto Geografico Nacional de Espana",
                    "www": ""
                },
                "comment": "",
                "email": "ergnss@transportes.gob.es",
                "name": "Geodesy Department - IGN",
                "phone": "",
                "role": "metadata_custodian",
                "title": ""
            }
        }
    ],
    "station_items": [
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2002-06-20 00:00:00",
                "date_to": "2010-07-21 09:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": "2010-07-21 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE 4000SSI"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": "2010-07-21 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "00028641"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": "2010-07-21 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": "2010-07-21 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NP 7.19 \/ SP 3.04"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": "2010-07-21 09:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": "2010-07-21 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Set tracking of unhealthy satellites",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2010-07-21 09:00:00",
                "date_to": "2010-09-13 10:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2010-07-21 09:00:00",
                        "date_to": "2010-09-13 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE 4000SSI"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2010-07-21 09:00:00",
                        "date_to": "2010-09-13 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "00028641"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2010-07-21 09:00:00",
                        "date_to": "2010-09-13 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2010-07-21 09:00:00",
                        "date_to": "2010-09-13 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NP 7.19 \/ SP 3.04"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2010-07-21 09:00:00",
                        "date_to": "2010-09-13 10:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2010-07-21 09:00:00",
                        "date_to": "2010-09-13 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2010-09-14 00:00:00",
                "date_to": "2011-05-11 10:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2010-09-14 00:00:00",
                        "date_to": "2011-05-11 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR10"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2010-09-14 00:00:00",
                        "date_to": "2011-05-11 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1700062"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2010-09-14 00:00:00",
                        "date_to": "2011-05-11 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2010-09-14 00:00:00",
                        "date_to": "2011-05-11 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1.00\/4.005"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2010-09-14 00:00:00",
                        "date_to": "2011-05-11 10:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2010-09-14 00:00:00",
                        "date_to": "2011-05-11 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2011-05-11 12:00:00",
                "date_to": "2012-05-11 13:13:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2011-05-11 12:00:00",
                        "date_to": "2012-05-11 13:13:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR10"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2011-05-11 12:00:00",
                        "date_to": "2012-05-11 13:13:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1700062"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2011-05-11 12:00:00",
                        "date_to": "2012-05-11 13:13:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2011-05-11 12:00:00",
                        "date_to": "2012-05-11 13:13:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1.00\/4.007"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2011-05-11 12:00:00",
                        "date_to": "2012-05-11 13:13:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2011-05-11 12:00:00",
                        "date_to": "2012-05-11 13:13:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2012-05-11 13:20:00",
                "date_to": "2012-09-28 07:42:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2012-05-11 13:20:00",
                        "date_to": "2012-09-28 07:42:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR10"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2012-05-11 13:20:00",
                        "date_to": "2012-09-28 07:42:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1700062"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2012-05-11 13:20:00",
                        "date_to": "2012-09-28 07:42:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2012-05-11 13:20:00",
                        "date_to": "2012-09-28 07:42:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "2.50\/6.110"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2012-05-11 13:20:00",
                        "date_to": "2012-09-28 07:42:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2012-05-11 13:20:00",
                        "date_to": "2012-09-28 07:42:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2012-09-28 07:43:00",
                "date_to": "2013-05-13 11:15:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2012-09-28 07:43:00",
                        "date_to": "2013-05-13 11:15:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR10"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2012-09-28 07:43:00",
                        "date_to": "2013-05-13 11:15:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1700062"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2012-09-28 07:43:00",
                        "date_to": "2013-05-13 11:15:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2012-09-28 07:43:00",
                        "date_to": "2013-05-13 11:15:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "2.62\/6.112"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2012-09-28 07:43:00",
                        "date_to": "2013-05-13 11:15:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2012-09-28 07:43:00",
                        "date_to": "2013-05-13 11:15:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2013-05-13 11:16:00",
                "date_to": "2014-01-09 11:24:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2013-05-13 11:16:00",
                        "date_to": "2014-01-09 11:24:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR10"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2013-05-13 11:16:00",
                        "date_to": "2014-01-09 11:24:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1700062"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2013-05-13 11:16:00",
                        "date_to": "2014-01-09 11:24:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2013-05-13 11:16:00",
                        "date_to": "2014-01-09 11:24:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.00\/6.113"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2013-05-13 11:16:00",
                        "date_to": "2014-01-09 11:24:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2013-05-13 11:16:00",
                        "date_to": "2014-01-09 11:24:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2014-01-09 11:41:00",
                "date_to": "2016-08-26 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2014-01-09 11:41:00",
                        "date_to": "2016-08-26 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR10"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2014-01-09 11:41:00",
                        "date_to": "2016-08-26 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1700062"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2014-01-09 11:41:00",
                        "date_to": "2016-08-26 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2014-01-09 11:41:00",
                        "date_to": "2016-08-26 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.03\/6.214"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2014-01-09 11:41:00",
                        "date_to": "2016-08-26 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2014-01-09 11:41:00",
                        "date_to": "2016-08-26 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2016-08-26 12:00:00",
                "date_to": "2019-02-14 14:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2016-08-26 12:00:00",
                        "date_to": "2019-02-14 14:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR10"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2016-08-26 12:00:00",
                        "date_to": "2019-02-14 14:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1700062"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2016-08-26 12:00:00",
                        "date_to": "2019-02-14 14:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2016-08-26 12:00:00",
                        "date_to": "2019-02-14 14:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.11\/6.403"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2016-08-26 12:00:00",
                        "date_to": "2019-02-14 14:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2016-08-26 12:00:00",
                        "date_to": "2019-02-14 14:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2019-02-14 14:00:00",
                "date_to": "2020-03-25 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2019-02-14 14:00:00",
                        "date_to": "2020-03-25 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR10"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2019-02-14 14:00:00",
                        "date_to": "2020-03-25 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1700062"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2019-02-14 14:00:00",
                        "date_to": "2020-03-25 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2019-02-14 14:00:00",
                        "date_to": "2020-03-25 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.11.1639\/6.522"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2019-02-14 14:00:00",
                        "date_to": "2020-03-25 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2019-02-14 14:00:00",
                        "date_to": "2020-03-25 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2020-03-25 12:00:00",
                "date_to": "2021-04-16 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2020-03-25 12:00:00",
                        "date_to": "2021-04-16 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR10"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2020-03-25 12:00:00",
                        "date_to": "2021-04-16 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1700062"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2020-03-25 12:00:00",
                        "date_to": "2021-04-16 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2020-03-25 12:00:00",
                        "date_to": "2021-04-16 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.11\/6.524"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2020-03-25 12:00:00",
                        "date_to": "2021-04-16 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2020-03-25 12:00:00",
                        "date_to": "2021-04-16 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2021-04-16 13:00:00",
                "date_to": "2022-12-13 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2021-04-16 13:00:00",
                        "date_to": "2022-12-13 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR10"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2021-04-16 13:00:00",
                        "date_to": "2022-12-13 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1700062"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2021-04-16 13:00:00",
                        "date_to": "2022-12-13 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2021-04-16 13:00:00",
                        "date_to": "2022-12-13 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.11\/6.713"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2021-04-16 13:00:00",
                        "date_to": "2022-12-13 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2021-04-16 13:00:00",
                        "date_to": "2022-12-13 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2022-12-13 12:00:00",
                "date_to": "2023-07-25 09:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2022-12-13 12:00:00",
                        "date_to": "2023-07-25 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR50"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2022-12-13 12:00:00",
                        "date_to": "2023-07-25 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1871896"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2022-12-13 12:00:00",
                        "date_to": "2023-07-25 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2022-12-13 12:00:00",
                        "date_to": "2023-07-25 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "4.61\/7.811"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2022-12-13 12:00:00",
                        "date_to": "2023-07-25 09:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2022-12-13 12:00:00",
                        "date_to": "2023-07-25 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2023-07-25 10:00:00",
                "date_to": "2024-03-15 13:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2023-07-25 10:00:00",
                        "date_to": "2024-03-15 13:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR50"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2023-07-25 10:00:00",
                        "date_to": "2024-03-15 13:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1871896"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2023-07-25 10:00:00",
                        "date_to": "2024-03-15 13:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2023-07-25 10:00:00",
                        "date_to": "2024-03-15 13:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "4.70\/7.813"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2023-07-25 10:00:00",
                        "date_to": "2024-03-15 13:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2023-07-25 10:00:00",
                        "date_to": "2024-03-15 13:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2024-03-15 13:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2024-03-15 13:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR50"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2024-03-15 13:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1871896"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2024-03-15 13:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2024-03-15 13:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "4.80\/7.900"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2024-03-15 13:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2024-03-15 13:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2002-06-20 00:00:00",
                "date_to": "2010-09-13 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": "2010-09-13 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRM29659.00"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": "2010-09-13 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "2202141"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": "2010-09-13 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BPA"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": "2010-09-13 00:00:00",
                        "value_date": null,
                        "value_numeric": 3.063,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": "2010-09-13 00:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": "2010-09-13 00:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": "2010-09-13 00:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": "2010-09-13 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE"
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": "2010-09-13 00:00:00",
                        "value_date": null,
                        "value_numeric": 30,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2002-06-20 00:00:00",
                "date_to": "2010-09-13 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": "2010-09-13 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TCWD"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": "2010-09-13 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2010-09-14 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2010-09-14 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEIAR25.R3"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2010-09-14 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "10240005"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2010-09-14 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BPA"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2010-09-14 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 3.059,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2010-09-14 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2010-09-14 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2010-09-14 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2010-09-14 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA"
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2010-09-14 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 30,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2010-09-14 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2010-09-14 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEIT"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2010-09-14 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@transportes.gob.es",
                    "name": "Geodesy Department - IGN",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "IGE",
                        "address": "General Ibanez de Ibero 3\n28003 Madrid\nSpain",
                        "infos": "",
                        "name": "Instituto Geografico Nacional de Espana",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ergnss@mitma.es",
                    "name": "Geodesy Department \u2013 IGN",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2002-06-20 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "standard_type"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "INTERNAL"
                    },
                    {
                        "attribute": {
                            "name": "input_frequency"
                        },
                        "date_from": "2002-06-20 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "frequency_standard"
                }
            }
        }
    ],
    "station_networks": [
        {
            "name": "EPN"
        },
        {
            "name": "EPOS"
        },
        {
            "name": "ERGNSS"
        }
    ],
    "station_type": "GNSS Continuous"
}