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                            "name": "antenna_cable_length"
                        },
                        "date_from": "2008-12-12 12:01:00",
                        "date_to": "2015-07-29 07:30:00",
                        "value_date": null,
                        "value_numeric": 30,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": "Antenna individual calibrated\r\nabsolute by GEO++",
                "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": "2008-12-12 12:01:00",
                "date_to": "2015-07-29 07:30:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
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                        "date_from": "2008-12-12 12:01:00",
                        "date_to": "2015-07-29 07:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEIS"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
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                        "date_from": "2008-12-12 12:01:00",
                        "date_to": "2015-07-29 07:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": "Antenna individual calibrated\r\nabsolute by GEO++",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
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                    },
                    "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": "2015-07-29 12:00:00",
                "date_to": "2018-09-14 23:59:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2015-07-29 12:00:00",
                        "date_to": "2018-09-14 23:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEIAR25.R3"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
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                        "date_from": "2015-07-29 12:00:00",
                        "date_to": "2018-09-14 23:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "10170026"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2015-07-29 12:00:00",
                        "date_to": "2018-09-14 23:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BPA"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2015-07-29 12:00:00",
                        "date_to": "2018-09-14 23:59:00",
                        "value_date": null,
                        "value_numeric": 0.026,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2015-07-29 12:00:00",
                        "date_to": "2018-09-14 23:59:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2015-07-29 12:00:00",
                        "date_to": "2018-09-14 23:59:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2015-07-29 12:00:00",
                        "date_to": "2018-09-14 23:59:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2015-07-29 12:00:00",
                        "date_to": "2018-09-14 23:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Ecoflex15"
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2015-07-29 12:00:00",
                        "date_to": "2018-09-14 23:59:00",
                        "value_date": null,
                        "value_numeric": 30,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": "Antenna individual calibrated\r\nabsolute by GEO++",
                "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": "2015-07-29 12:00:00",
                "date_to": "2018-09-14 23:59:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2015-07-29 12:00:00",
                        "date_to": "2018-09-14 23:59:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "LEIT"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2015-07-29 12:00:00",
                        "date_to": "2018-09-14 23:59:00",
                        "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": "2003-04-08 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "standard_type"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "INTERNAL"
                    },
                    {
                        "attribute": {
                            "name": "input_frequency"
                        },
                        "date_from": "2003-04-08 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 0.3 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": "2003-04-08 00:00:00",
                "date_to": "2006-05-29 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "PT35108"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Vaisala Oyi"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": 10,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": 1,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "aspiration"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "CAPACITIVY THIN FILM POLYMER"
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": 0.3,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "humidity_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "Humidity Sensor is 0.3 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": "2006-05-29 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2006-05-29 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "HMP45A-P"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2006-05-29 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Vaisala Oyi"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
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                        "date_from": "2006-05-29 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "A2630001"
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
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                        "date_from": "2006-05-29 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 10,
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                    },
                    {
                        "attribute": {
                            "name": "accuracy"
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                        "date_from": "2006-05-29 00:00:00",
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                        "value_date": null,
                        "value_numeric": 1,
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                    },
                    {
                        "attribute": {
                            "name": "aspiration"
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                        "date_from": "2006-05-29 00:00:00",
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                    {
                        "attribute": {
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                        "date_from": "2006-05-29 00:00:00",
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                        "value_date": null,
                        "value_numeric": -0.3,
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                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
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                        "date_from": "2006-05-29 00:00:00",
                        "date_to": null,
                        "value_date": "2005-06-29 00:00:00",
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "humidity_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "The pressure Sensor is\r\n5.6 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": "2003-04-08 00:00:00",
                "date_to": "2006-05-29 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
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                    },
                    {
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                            "name": "manufacturer"
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                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
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                    },
                    {
                        "attribute": {
                            "name": "serial_number"
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                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
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                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": 10,
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                    },
                    {
                        "attribute": {
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                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
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                        "value_numeric": 0.1,
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                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
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                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "pressure_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "Pressure Sensor is\r\n5.6 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": "2006-05-29 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
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                        "date_from": "2006-05-29 00:00:00",
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                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
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                        "date_from": "2006-05-29 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Vaisala Oyi"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2006-05-29 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "W5110005"
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
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                        "date_from": "2006-05-29 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 10,
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                    },
                    {
                        "attribute": {
                            "name": "accuracy"
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                        "date_from": "2006-05-29 00:00:00",
                        "date_to": null,
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                    },
                    {
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                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2006-05-29 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": -5.6,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2006-05-29 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\n0.3 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": "2003-04-08 00:00:00",
                "date_to": "2006-05-29 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "PT35108"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Vaisala Oyi"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": 10,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": 0.2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "aspiration"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "RESISTIVE PLATINUM PROBE"
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
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                    {
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                            "name": "calibration_date"
                        },
                        "date_from": "2003-04-08 00:00:00",
                        "date_to": "2006-05-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "temperature_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "Temperature Sensor is\r\n0.3 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": {
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                        "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": "2006-05-29 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2006-05-29 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "HMP45A-P"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2006-05-29 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Vaisala Oyi"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2006-05-29 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "A2630001"
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2006-05-29 00:00:00",
                        "date_to": null,
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                        "value_numeric": 10,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
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                        "date_from": "2006-05-29 00:00:00",
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                    },
                    {
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                    },
                    {
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                        "date_from": "2006-05-29 00:00:00",
                        "date_to": null,
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                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
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                        "date_to": null,
                        "value_date": "2005-06-29 00:00:00",
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "temperature_sensor"
                }
            }
        }
    ],
    "station_networks": [
        {
            "name": "EPOS"
        }
    ],
    "station_type": "GNSS Continuous"
}