{
    "cdp_num": "None",
    "comment": "LPAL is a reference point of the Spanish\r\nNational GPS Reference Stations Network\r\nraised by the Instituto Geografico Nacional.\r\nThe monument is a reinforced concrete pillar\r\non the top of the roof of a 3 meters height\r\nbuilding of the Roque de los Muchachos\r\nObservatory, Astrophysical Institute of\r\nCanarias.",
    "conditions": [],
    "country": "Spain",
    "country_code_ISO": "ESP",
    "date_from": "2001-05-17 00:00:00",
    "date_to": null,
    "description": "BRASS PLATE",
    "geological": {
        "bedrock": {
            "condition": "FRESH",
            "type": "IGNEOUS"
        },
        "characteristic": "BEDROCK",
        "distance_to_fault": null,
        "fault_zone": "NO",
        "fracture_spacing": "11-50"
    },
    "iers_domes": "81701M001",
    "instrument_collocation": [],
    "local_ties": [],
    "location": {
        "city": "Roque de los Muchachos",
        "coordinates": {
            "X": 5326646.35,
            "Y": -1719826.433,
            "Z": 3052043.532,
            "altitude": 2199.2,
            "lat": 28.763869763306182,
            "lon": -17.893829691454158
        },
        "country": "Spain",
        "country_iso_code": "ESP",
        "description": "",
        "state": "Santa Cruz de Tenerife, La Palma Island,",
        "tectonic": {
            "plate_name": "AFRICAN"
        }
    },
    "logs": {
        "contact": "ergnss@transportes.gob.es",
        "date": "2025-11-27 00:00:00",
        "log_type": "UPDATE",
        "modified": "UNAVAILABLE",
        "previous": "UNAVAILABLE",
        "title": "LPAL00ESP.xml"
    },
    "marker": "LPAL",
    "monument": {
        "description": "PILLAR",
        "foundation": "CONCRETE BLOCK",
        "foundation_depth": 2,
        "height": 1.2,
        "monument_inscription": "None"
    },
    "monument_num": 0,
    "name": "La Palma",
    "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": "2001-05-17 00:00:00",
                "date_to": "2008-07-09 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2001-05-17 00:00:00",
                        "date_to": "2008-07-09 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRIMBLE 4000SSI"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2001-05-17 00:00:00",
                        "date_to": "2008-07-09 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "00028542"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2001-05-17 00:00:00",
                        "date_to": "2008-07-09 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2001-05-17 00:00:00",
                        "date_to": "2008-07-09 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NP 7.19 \/ SP 3.04"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2001-05-17 00:00:00",
                        "date_to": "2008-07-09 00:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2001-05-17 00:00:00",
                        "date_to": "2008-07-09 00:00:00",
                        "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": "2008-07-09 10:00:00",
                "date_to": "2009-01-19 09:34:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2008-07-09 10:00:00",
                        "date_to": "2009-01-19 09:34:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GRX1200GGPRO"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2008-07-09 10:00:00",
                        "date_to": "2009-01-19 09:34:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "355499"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2008-07-09 10:00:00",
                        "date_to": "2009-01-19 09:34:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2008-07-09 10:00:00",
                        "date_to": "2009-01-19 09:34:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "5.62"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2008-07-09 10:00:00",
                        "date_to": "2009-01-19 09:34:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2008-07-09 10:00:00",
                        "date_to": "2009-01-19 09:34:00",
                        "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": "2009-01-19 09:53:00",
                "date_to": "2009-04-22 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2009-01-19 09:53:00",
                        "date_to": "2009-04-22 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GRX1200GGPRO"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2009-01-19 09:53:00",
                        "date_to": "2009-04-22 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "355499"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2009-01-19 09:53:00",
                        "date_to": "2009-04-22 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2009-01-19 09:53:00",
                        "date_to": "2009-04-22 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "6.02"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2009-01-19 09:53:00",
                        "date_to": "2009-04-22 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2009-01-19 09:53:00",
                        "date_to": "2009-04-22 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": "2009-04-23 00:00:00",
                "date_to": "2010-02-15 11:05:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2009-04-23 00:00:00",
                        "date_to": "2010-02-15 11:05:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GRX1200GGPRO"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2009-04-23 00:00:00",
                        "date_to": "2010-02-15 11:05:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "355499"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2009-04-23 00:00:00",
                        "date_to": "2010-02-15 11:05:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2009-04-23 00:00:00",
                        "date_to": "2010-02-15 11:05:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "7.02"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2009-04-23 00:00:00",
                        "date_to": "2010-02-15 11:05:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2009-04-23 00:00:00",
                        "date_to": "2010-02-15 11:05:00",
                        "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": "2010-02-15 12:00:00",
                "date_to": "2010-06-14 08:59:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2010-02-15 12:00:00",
                        "date_to": "2010-06-14 08:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GRX1200GGPRO"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2010-02-15 12:00:00",
                        "date_to": "2010-06-14 08:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "355499"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2010-02-15 12:00:00",
                        "date_to": "2010-06-14 08:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2010-02-15 12:00:00",
                        "date_to": "2010-06-14 08:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "7.80"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2010-02-15 12:00:00",
                        "date_to": "2010-06-14 08:59:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2010-02-15 12:00:00",
                        "date_to": "2010-06-14 08:59:00",
                        "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": "2010-06-14 09:00:00",
                "date_to": "2010-06-29 11:34:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2010-06-14 09:00:00",
                        "date_to": "2010-06-29 11:34:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GRX1200GGPRO"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2010-06-14 09:00:00",
                        "date_to": "2010-06-29 11:34:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "355499"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2010-06-14 09:00:00",
                        "date_to": "2010-06-29 11:34:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2010-06-14 09:00:00",
                        "date_to": "2010-06-29 11:34:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "7.80\/3.019"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2010-06-14 09:00:00",
                        "date_to": "2010-06-29 11:34:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2010-06-14 09:00:00",
                        "date_to": "2010-06-29 11:34:00",
                        "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": "2010-06-30 00:00:00",
                "date_to": "2010-07-22 10:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2010-06-30 00:00:00",
                        "date_to": "2010-07-22 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GRX1200GGPRO"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2010-06-30 00:00:00",
                        "date_to": "2010-07-22 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "355499"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2010-06-30 00:00:00",
                        "date_to": "2010-07-22 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2010-06-30 00:00:00",
                        "date_to": "2010-07-22 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "8.00\/3.019"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2010-06-30 00:00:00",
                        "date_to": "2010-07-22 10:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2010-06-30 00:00:00",
                        "date_to": "2010-07-22 10:00:00",
                        "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": "2010-07-22 10:00:00",
                "date_to": "2011-05-25 12:21:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2010-07-22 10:00:00",
                        "date_to": "2011-05-25 12:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GRX1200GGPRO"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2010-07-22 10:00:00",
                        "date_to": "2011-05-25 12:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "355499"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2010-07-22 10:00:00",
                        "date_to": "2011-05-25 12:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2010-07-22 10:00:00",
                        "date_to": "2011-05-25 12:21:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "8.00\/3.019"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2010-07-22 10:00:00",
                        "date_to": "2011-05-25 12:21:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2010-07-22 10:00:00",
                        "date_to": "2011-05-25 12:21:00",
                        "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": "2011-05-25 12:29:00",
                "date_to": "2012-01-24 09:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2011-05-25 12:29:00",
                        "date_to": "2012-01-24 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GRX1200GGPRO"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2011-05-25 12:29:00",
                        "date_to": "2012-01-24 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "355499"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2011-05-25 12:29:00",
                        "date_to": "2012-01-24 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2011-05-25 12:29:00",
                        "date_to": "2012-01-24 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "8.20\/3.019"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2011-05-25 12:29:00",
                        "date_to": "2012-01-24 09:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2011-05-25 12:29:00",
                        "date_to": "2012-01-24 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": "2012-01-25 00:00:00",
                "date_to": "2012-03-21 12:30:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2012-01-25 00:00:00",
                        "date_to": "2012-03-21 12:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GRX1200GGPRO"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2012-01-25 00:00:00",
                        "date_to": "2012-03-21 12:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "355499"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2012-01-25 00:00:00",
                        "date_to": "2012-03-21 12:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2012-01-25 00:00:00",
                        "date_to": "2012-03-21 12:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "8.50\/3.019"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2012-01-25 00:00:00",
                        "date_to": "2012-03-21 12:30:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2012-01-25 00:00:00",
                        "date_to": "2012-03-21 12:30:00",
                        "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": "2012-03-21 20:00:00",
                "date_to": "2013-05-14 10:53:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2012-03-21 20:00:00",
                        "date_to": "2013-05-14 10:53:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GRX1200GGPRO"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2012-03-21 20:00:00",
                        "date_to": "2013-05-14 10:53:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "355499"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2012-03-21 20:00:00",
                        "date_to": "2013-05-14 10:53:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2012-03-21 20:00:00",
                        "date_to": "2013-05-14 10:53:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "8.51\/3.019"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2012-03-21 20:00:00",
                        "date_to": "2013-05-14 10:53:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2012-03-21 20:00:00",
                        "date_to": "2013-05-14 10:53:00",
                        "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": "2013-05-14 11:07:00",
                "date_to": "2022-04-05 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2013-05-14 11:07:00",
                        "date_to": "2022-04-05 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GRX1200GGPRO"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2013-05-14 11:07:00",
                        "date_to": "2022-04-05 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "355499"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2013-05-14 11:07:00",
                        "date_to": "2022-04-05 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2013-05-14 11:07:00",
                        "date_to": "2022-04-05 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "8.71\/3.822"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2013-05-14 11:07:00",
                        "date_to": "2022-04-05 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2013-05-14 11:07:00",
                        "date_to": "2022-04-05 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": "2022-04-05 12:00:00",
                "date_to": "2022-11-23 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2022-04-05 12:00:00",
                        "date_to": "2022-11-23 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR50"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2022-04-05 12:00:00",
                        "date_to": "2022-11-23 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1871515"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2022-04-05 12:00:00",
                        "date_to": "2022-11-23 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2022-04-05 12:00:00",
                        "date_to": "2022-11-23 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "4.51\/7.710"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2022-04-05 12:00:00",
                        "date_to": "2022-11-23 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2022-04-05 12:00:00",
                        "date_to": "2022-11-23 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": "2022-11-23 12:00:00",
                "date_to": "2023-07-25 09:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2022-11-23 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": "2022-11-23 12:00:00",
                        "date_to": "2023-07-25 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1871515"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2022-11-23 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": "2022-11-23 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": "2022-11-23 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": "2022-11-23 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 09:00:00",
                "date_to": "2024-04-22 08:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2023-07-25 09:00:00",
                        "date_to": "2024-04-22 08:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR50"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2023-07-25 09:00:00",
                        "date_to": "2024-04-22 08:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1871515"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2023-07-25 09:00:00",
                        "date_to": "2024-04-22 08:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2023-07-25 09:00:00",
                        "date_to": "2024-04-22 08:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "4.70\/7.813"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2023-07-25 09:00:00",
                        "date_to": "2024-04-22 08:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2023-07-25 09:00:00",
                        "date_to": "2024-04-22 08:00:00",
                        "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": "2024-04-22 08:02:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2024-04-22 08:02:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GR50"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2024-04-22 08:02:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1871515"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2024-04-22 08:02:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+BDS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2024-04-22 08:02:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "4.80\/7.900"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2024-04-22 08:02:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2024-04-22 08:02:00",
                        "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": "2001-05-17 00:00:00",
                "date_to": "2008-07-09 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2001-05-17 00:00:00",
                        "date_to": "2008-07-09 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRM29659.00"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2001-05-17 00:00:00",
                        "date_to": "2008-07-09 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "214115"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2001-05-17 00:00:00",
                        "date_to": "2008-07-09 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BPA"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2001-05-17 00:00:00",
                        "date_to": "2008-07-09 00:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2001-05-17 00:00:00",
                        "date_to": "2008-07-09 00:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2001-05-17 00:00:00",
                        "date_to": "2008-07-09 00:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2001-05-17 00:00:00",
                        "date_to": "2008-07-09 00:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2001-05-17 00:00:00",
                        "date_to": "2008-07-09 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2001-05-17 00:00:00",
                        "date_to": "2008-07-09 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": "2001-05-17 00:00:00",
                "date_to": "2008-07-09 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2001-05-17 00:00:00",
                        "date_to": "2008-07-09 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TCWD"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2001-05-17 00:00:00",
                        "date_to": "2008-07-09 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": "2008-07-09 10:00:00",
                "date_to": "2022-04-05 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2008-07-09 10:00:00",
                        "date_to": "2022-04-05 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEIAT504GG"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2008-07-09 10:00:00",
                        "date_to": "2022-04-05 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "200625"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2008-07-09 10:00:00",
                        "date_to": "2022-04-05 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BPA"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2008-07-09 10:00:00",
                        "date_to": "2022-04-05 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2008-07-09 10:00:00",
                        "date_to": "2022-04-05 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2008-07-09 10:00:00",
                        "date_to": "2022-04-05 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2008-07-09 10:00:00",
                        "date_to": "2022-04-05 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2008-07-09 10:00:00",
                        "date_to": "2022-04-05 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2008-07-09 10:00:00",
                        "date_to": "2022-04-05 12:00:00",
                        "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": "2008-07-09 10:00:00",
                "date_to": "2022-04-05 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2008-07-09 10:00:00",
                        "date_to": "2022-04-05 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NONE"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2008-07-09 10:00:00",
                        "date_to": "2022-04-05 12:00:00",
                        "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": "2022-04-05 12:01:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2022-04-05 12:01:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEIAR20"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2022-04-05 12:01:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "24238037"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2022-04-05 12:01:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BAM"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2022-04-05 12:01:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0.0771,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2022-04-05 12:01:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2022-04-05 12:01:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2022-04-05 12:01:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2022-04-05 12:01:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2022-04-05 12:01:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "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": "2022-04-05 12:01:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2022-04-05 12:01:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEIM"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2022-04-05 12:01:00",
                        "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": "2001-05-17 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "standard_type"
                        },
                        "date_from": "2001-05-17 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "INTERNAL"
                    },
                    {
                        "attribute": {
                            "name": "input_frequency"
                        },
                        "date_from": "2001-05-17 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"
        },
        {
            "name": "IGS"
        }
    ],
    "station_type": "GNSS Continuous"
}