{
    "cdp_num": null,
    "comment": "Survey Marker Bolt on a steel\r\nmast, fastened on a wall on\r\nthe roof on the building of the\r\nGrundschule in Hoernum \/ Island\r\nSylt. Close to the harbour and\r\nto the tide gauge.\r\nThe Survey Marker Bolt is\r\n1.1 m above the roof and\r\n6.0 m above the ground.\r\nFormer station HOER 14284M001",
    "conditions": [],
    "country": "Germany",
    "country_code_ISO": "DEU",
    "date_from": "2005-07-01 00:00:00",
    "date_to": "2015-05-19 12:00:00",
    "description": "SURVEY MARKER BOLT ON THE STEEL MAST",
    "geological": {
        "bedrock": {
            "condition": null,
            "type": null
        },
        "characteristic": null,
        "distance_to_fault": null,
        "fault_zone": null,
        "fracture_spacing": null
    },
    "iers_domes": "14284M002",
    "instrument_collocation": [],
    "local_ties": [],
    "location": {
        "city": "Hoernum \/ Island Sylt",
        "coordinates": {
            "X": 3650022.97,
            "Y": 532050.345,
            "Z": 5185984.295,
            "altitude": 62.7,
            "lat": 54.75874917381979,
            "lon": 8.293384214768222
        },
        "country": "Germany",
        "country_iso_code": "DEU",
        "description": "",
        "state": "Schleswig-Holstein",
        "tectonic": {
            "plate_name": "EURASIAN"
        }
    },
    "logs": {
        "contact": "GREF Operator (operator.gref@bkg.bund.de)",
        "date": "2022-09-05 00:00:00",
        "log_type": "UPDATE",
        "modified": "UNAVAILABLE",
        "previous": "UNAVAILABLE",
        "title": "HOE200DEU.xml"
    },
    "marker": "HOE2",
    "monument": {
        "description": "STEEL MAST",
        "foundation": "STEEL MAST FASTENED ON THE ROOF",
        "foundation_depth": null,
        "height": 3,
        "monument_inscription": null
    },
    "monument_num": 0,
    "name": "Hoernum \/ Island Sylt",
    "receiver_num": 0,
    "station_contacts": [
        {
            "contact": {
                "agency": {
                    "abbreviation": "BKG",
                    "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                    "infos": "",
                    "name": "Bundesamt fuer Kartographie und Geodaesie",
                    "www": ""
                },
                "comment": "",
                "email": "operator.gref@bkg.bund.de",
                "name": "GREF Operator",
                "phone": "+49 341 5634410",
                "role": "site_owner",
                "title": ""
            }
        },
        {
            "contact": {
                "agency": {
                    "abbreviation": "BKG",
                    "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                    "infos": "",
                    "name": "Bundesamt fuer Kartographie und Geodaesie",
                    "www": ""
                },
                "comment": "",
                "email": "operator.gref@bkg.bund.de",
                "name": "GREF Operator",
                "phone": "+49 341 5634410",
                "role": "metadata_custodian",
                "title": ""
            }
        }
    ],
    "station_items": [
        {
            "item": {
                "comment": "Additional Number\r\nLE 4568 on the\r\ntype level",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2005-07-01 10:00:00",
                "date_to": "2006-05-23 10:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2005-07-01 10:00:00",
                        "date_to": "2006-05-23 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "JPS LEGACY"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2005-07-01 10:00:00",
                        "date_to": "2006-05-23 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "AFA0JAF1D6O"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2005-07-01 10:00:00",
                        "date_to": "2006-05-23 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2005-07-01 10:00:00",
                        "date_to": "2006-05-23 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "E_GGD_2\/2.3P4"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2005-07-01 10:00:00",
                        "date_to": "2006-05-23 10:00:00",
                        "value_date": null,
                        "value_numeric": 5,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2005-07-01 10:00:00",
                        "date_to": "2006-05-23 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Additional Number\r\nLE 4568 on the\r\ntype level",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2006-05-23 10:00:00",
                "date_to": "2007-01-09 10:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2006-05-23 10:00:00",
                        "date_to": "2007-01-09 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "JPS LEGACY"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2006-05-23 10:00:00",
                        "date_to": "2007-01-09 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "AFA0JAF1D6O"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2006-05-23 10:00:00",
                        "date_to": "2007-01-09 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2006-05-23 10:00:00",
                        "date_to": "2007-01-09 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "E_GGD_2\/2.5P1"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2006-05-23 10:00:00",
                        "date_to": "2007-01-09 10:00:00",
                        "value_date": null,
                        "value_numeric": 5,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2006-05-23 10:00:00",
                        "date_to": "2007-01-09 10:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Additional Number\r\nLE 4568 on the\r\ntype level",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2007-01-09 10:00:00",
                "date_to": "2007-11-22 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2007-01-09 10:00:00",
                        "date_to": "2007-11-22 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "JPS LEGACY"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2007-01-09 10:00:00",
                        "date_to": "2007-11-22 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "AFA0JAF1D6O"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2007-01-09 10:00:00",
                        "date_to": "2007-11-22 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2007-01-09 10:00:00",
                        "date_to": "2007-11-22 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "E_GGD_2\/2.5P1"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2007-01-09 10:00:00",
                        "date_to": "2007-11-22 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2007-01-09 10:00:00",
                        "date_to": "2007-11-22 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Additional Number\r\nLE 4568 on the\r\ntype level",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2007-11-22 12:00:00",
                "date_to": "2008-01-29 14:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2007-11-22 12:00:00",
                        "date_to": "2008-01-29 14:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "JPS LEGACY"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2007-11-22 12:00:00",
                        "date_to": "2008-01-29 14:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "AFA0JAF1D6O"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2007-11-22 12:00:00",
                        "date_to": "2008-01-29 14:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2007-11-22 12:00:00",
                        "date_to": "2008-01-29 14:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "2.6.0 APR,18,2007"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2007-11-22 12:00:00",
                        "date_to": "2008-01-29 14:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2007-11-22 12:00:00",
                        "date_to": "2008-01-29 14:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Additional Number\r\nLE 4568 on the\r\ntype level",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2008-01-29 14:00:00",
                "date_to": "2008-05-07 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2008-01-29 14:00:00",
                        "date_to": "2008-05-07 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "JPS LEGACY"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2008-01-29 14:00:00",
                        "date_to": "2008-05-07 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "AFA0JAF1D6O"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2008-01-29 14:00:00",
                        "date_to": "2008-05-07 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2008-01-29 14:00:00",
                        "date_to": "2008-05-07 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "2.6.1 JAN,10,2008"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2008-01-29 14:00:00",
                        "date_to": "2008-05-07 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2008-01-29 14:00:00",
                        "date_to": "2008-05-07 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Additional Number\r\nLE 2813 on the\r\ntype level",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2008-05-07 12:00:00",
                "date_to": "2013-03-18 12:30:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2008-05-07 12:00:00",
                        "date_to": "2013-03-18 12:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "JPS LEGACY"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2008-05-07 12:00:00",
                        "date_to": "2013-03-18 12:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "MT311605707"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2008-05-07 12:00:00",
                        "date_to": "2013-03-18 12:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2008-05-07 12:00:00",
                        "date_to": "2013-03-18 12:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "2.6.1 JAN,10,2008"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2008-05-07 12:00:00",
                        "date_to": "2013-03-18 12:30:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2008-05-07 12:00:00",
                        "date_to": "2013-03-18 12:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Additional Number\r\nLE 2813 on the\r\ntype level",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2013-03-18 12:30:00",
                "date_to": "2013-04-11 11:30:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2013-03-18 12:30:00",
                        "date_to": "2013-04-11 11:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "JPS LEGACY"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2013-03-18 12:30:00",
                        "date_to": "2013-04-11 11:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "MT311605707"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2013-03-18 12:30:00",
                        "date_to": "2013-04-11 11:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2013-03-18 12:30:00",
                        "date_to": "2013-04-11 11:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "2.7.1B18 JUN,16,2011"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2013-03-18 12:30:00",
                        "date_to": "2013-04-11 11:30:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2013-03-18 12:30:00",
                        "date_to": "2013-04-11 11:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "ME serial number BDU10110437",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2013-04-11 12:00:00",
                "date_to": "2013-04-19 12:59:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2013-04-11 12:00:00",
                        "date_to": "2013-04-19 12:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GRX1200+GNSS"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2013-04-11 12:00:00",
                        "date_to": "2013-04-19 12:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "496017"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2013-04-11 12:00:00",
                        "date_to": "2013-04-19 12:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2013-04-11 12:00:00",
                        "date_to": "2013-04-19 12:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "8.51\/6.111"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2013-04-11 12:00:00",
                        "date_to": "2013-04-19 12:59:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2013-04-11 12:00:00",
                        "date_to": "2013-04-19 12:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "ME serial number BDU10110437",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2013-04-19 13:00:00",
                "date_to": "2013-05-28 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2013-04-19 13:00:00",
                        "date_to": "2013-05-28 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GRX1200+GNSS"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2013-04-19 13:00:00",
                        "date_to": "2013-05-28 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "496017"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2013-04-19 13:00:00",
                        "date_to": "2013-05-28 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2013-04-19 13:00:00",
                        "date_to": "2013-05-28 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "8.70\/6.112"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2013-04-19 13:00:00",
                        "date_to": "2013-05-28 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2013-04-19 13:00:00",
                        "date_to": "2013-05-28 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "ME serial number BDU09060566",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2013-05-28 12:15:00",
                "date_to": "2014-01-21 09:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2013-05-28 12:15:00",
                        "date_to": "2014-01-21 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEICA GRX1200+GNSS"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2013-05-28 12:15:00",
                        "date_to": "2014-01-21 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "495219"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2013-05-28 12:15:00",
                        "date_to": "2014-01-21 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL+SBAS"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2013-05-28 12:15:00",
                        "date_to": "2014-01-21 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "8.70\/6.112"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2013-05-28 12:15:00",
                        "date_to": "2014-01-21 09:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2013-05-28 12:15:00",
                        "date_to": "2014-01-21 09:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Board Id\r\n3VX88X7ER4PVS3W3GQCCE9Q5HZ",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2014-01-21 09:40:00",
                "date_to": "2015-05-19 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
                        },
                        "date_from": "2014-01-21 09:40:00",
                        "date_to": "2015-05-19 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "JAVAD TRE_G3TH DELTA"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2014-01-21 09:40:00",
                        "date_to": "2015-05-19 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "00177"
                    },
                    {
                        "attribute": {
                            "name": "satellite_system"
                        },
                        "date_from": "2014-01-21 09:40:00",
                        "date_to": "2015-05-19 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GPS+GLO+GAL"
                    },
                    {
                        "attribute": {
                            "name": "firmware_version"
                        },
                        "date_from": "2014-01-21 09:40:00",
                        "date_to": "2015-05-19 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "3.5.4"
                    },
                    {
                        "attribute": {
                            "name": "elevation_cutoff_setting"
                        },
                        "date_from": "2014-01-21 09:40:00",
                        "date_to": "2015-05-19 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "temperature_stabilization"
                        },
                        "date_from": "2014-01-21 09:40:00",
                        "date_to": "2015-05-19 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "Antenna calibrated absolute\r\nby Geo++ GmbH",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2005-07-01 10:00:00",
                "date_to": "2010-10-20 06:10:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2005-07-01 10:00:00",
                        "date_to": "2010-10-20 06:10:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TPSCR3_GGD"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2005-07-01 10:00:00",
                        "date_to": "2010-10-20 06:10:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "217-0298"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2005-07-01 10:00:00",
                        "date_to": "2010-10-20 06:10:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BPA"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2005-07-01 10:00:00",
                        "date_to": "2010-10-20 06:10:00",
                        "value_date": null,
                        "value_numeric": 0.045,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2005-07-01 10:00:00",
                        "date_to": "2010-10-20 06:10:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2005-07-01 10:00:00",
                        "date_to": "2010-10-20 06:10:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2005-07-01 10:00:00",
                        "date_to": "2010-10-20 06:10:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2005-07-01 10:00:00",
                        "date_to": "2010-10-20 06:10:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "RG214"
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2005-07-01 10:00:00",
                        "date_to": "2010-10-20 06:10:00",
                        "value_date": null,
                        "value_numeric": 30,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": "Antenna calibrated absolute\r\nby Geo++ GmbH",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2005-07-01 10:00:00",
                "date_to": "2010-10-20 06:10:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2005-07-01 10:00:00",
                        "date_to": "2010-10-20 06:10:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "CONE"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2005-07-01 10:00:00",
                        "date_to": "2010-10-20 06:10:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": "Antenna calibrated absolute\r\nby Geo++ GmbH, Garbsen 2010-07-06.",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2010-10-20 06:30:00",
                "date_to": "2013-05-28 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2010-10-20 06:30:00",
                        "date_to": "2013-05-28 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEIAR25.R3"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2010-10-20 06:30:00",
                        "date_to": "2013-05-28 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "10170026"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2010-10-20 06:30:00",
                        "date_to": "2013-05-28 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BPA"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2010-10-20 06:30:00",
                        "date_to": "2013-05-28 12:00:00",
                        "value_date": null,
                        "value_numeric": 0.045,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2010-10-20 06:30:00",
                        "date_to": "2013-05-28 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2010-10-20 06:30:00",
                        "date_to": "2013-05-28 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2010-10-20 06:30:00",
                        "date_to": "2013-05-28 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2010-10-20 06:30:00",
                        "date_to": "2013-05-28 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "AIRCOM+"
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2010-10-20 06:30:00",
                        "date_to": "2013-05-28 12:00:00",
                        "value_date": null,
                        "value_numeric": 15,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": "Antenna calibrated absolute\r\nby Geo++ GmbH, Garbsen 2010-07-06.",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2010-10-20 06:30:00",
                "date_to": "2013-05-28 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2010-10-20 06:30:00",
                        "date_to": "2013-05-28 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEIT"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2010-10-20 06:30:00",
                        "date_to": "2013-05-28 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": "Antenna calibrated absolute\r\nby Geo++ GmbH, Garbsen 2012-09-25.",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2013-05-28 12:15:00",
                "date_to": "2015-05-19 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2013-05-28 12:15:00",
                        "date_to": "2015-05-19 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEIAR25.R4"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2013-05-28 12:15:00",
                        "date_to": "2015-05-19 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "725267"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2013-05-28 12:15:00",
                        "date_to": "2015-05-19 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BPA"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2013-05-28 12:15:00",
                        "date_to": "2015-05-19 12:00:00",
                        "value_date": null,
                        "value_numeric": 0.045,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2013-05-28 12:15:00",
                        "date_to": "2015-05-19 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2013-05-28 12:15:00",
                        "date_to": "2015-05-19 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2013-05-28 12:15:00",
                        "date_to": "2015-05-19 12:00:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2013-05-28 12:15:00",
                        "date_to": "2015-05-19 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "AIRCOM+"
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2013-05-28 12:15:00",
                        "date_to": "2015-05-19 12:00:00",
                        "value_date": null,
                        "value_numeric": 15,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": "Antenna calibrated absolute\r\nby Geo++ GmbH, Garbsen 2012-09-25.",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2013-05-28 12:15:00",
                "date_to": "2015-05-19 12:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2013-05-28 12:15:00",
                        "date_to": "2015-05-19 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEIT"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2013-05-28 12:15:00",
                        "date_to": "2015-05-19 12:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2005-07-01 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "standard_type"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "INTERNAL"
                    },
                    {
                        "attribute": {
                            "name": "input_frequency"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "frequency_standard"
                }
            }
        },
        {
            "item": {
                "comment": "The humidity sensor is 0.2 m\r\nbelow the antenna.",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2005-07-01 00:00:00",
                "date_to": "2012-12-04 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": "2012-12-04 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "PT35108"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": "2012-12-04 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Vaisala Oyi"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": "2012-12-04 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": "2012-12-04 00:00:00",
                        "value_date": null,
                        "value_numeric": 10,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": "2012-12-04 00:00:00",
                        "value_date": null,
                        "value_numeric": 1,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "aspiration"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": "2012-12-04 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "CAPACITIVY THIN FILM POLYMER"
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": "2012-12-04 00:00:00",
                        "value_date": null,
                        "value_numeric": 0.2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": "2012-12-04 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "humidity_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "The humidity sensor is 2m\r\nbelow the antenna.",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2012-12-04 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2012-12-04 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "HMP45A-P"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2012-12-04 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Vaisala Oyi"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2012-12-04 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "W5040006"
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2012-12-04 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 10,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2012-12-04 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 1,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "aspiration"
                        },
                        "date_from": "2012-12-04 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "CAPACITIVY THIN FILM POLYMER"
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2012-12-04 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": -2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2012-12-04 00:00:00",
                        "date_to": null,
                        "value_date": "2011-09-29 00:00:00",
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "humidity_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "The pressure Sensor is\r\n6 m below the antenna.",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2005-07-01 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "PTU200"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Vaisala Oyi"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "W5130001"
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 10,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0.1,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": -6,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "pressure_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "The temperature sensor is\r\n0.2 m below the antenna.",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2005-07-01 00:00:00",
                "date_to": "2012-12-04 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": "2012-12-04 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "PT35108"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": "2012-12-04 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Vaisala Oyi"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": "2012-12-04 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": "2012-12-04 00:00:00",
                        "value_date": null,
                        "value_numeric": 10,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": "2012-12-04 00:00:00",
                        "value_date": null,
                        "value_numeric": 0.2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "aspiration"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": "2012-12-04 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "RESISTIVE PLATINUM PROBE"
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": "2012-12-04 00:00:00",
                        "value_date": null,
                        "value_numeric": 0.2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2005-07-01 00:00:00",
                        "date_to": "2012-12-04 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "temperature_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "The temperature sensor is\r\n2 m below the antenna.",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2012-12-04 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2012-12-04 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "HMP45A-P"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2012-12-04 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Vaisala Oyi"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2012-12-04 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "W5040006"
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2012-12-04 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 10,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2012-12-04 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0.2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "aspiration"
                        },
                        "date_from": "2012-12-04 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "RESISTIVE PLATINUM PROBE"
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2012-12-04 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": -2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2012-12-04 00:00:00",
                        "date_to": null,
                        "value_date": "2011-09-29 00:00:00",
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "temperature_sensor"
                }
            }
        }
    ],
    "station_networks": [
        {
            "name": "EPN"
        },
        {
            "name": "EPOS"
        }
    ],
    "station_type": "GNSS Continuous"
}