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                        "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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                        "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": "2017-03-28 00:00:00",
                "date_to": "2023-05-23 00:00:00",
                "item_attributes": [
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                        "attribute": {
                            "name": "sensor_model"
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                        "date_from": "2017-03-28 00:00:00",
                        "date_to": "2023-05-23 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "HMP45A-P"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2017-03-28 00:00:00",
                        "date_to": "2023-05-23 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "Vaisala"
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                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2017-03-28 00:00:00",
                        "date_to": "2023-05-23 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "X4150003"
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                    {
                        "attribute": {
                            "name": "data_sampling_interval"
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                        "date_from": "2017-03-28 00:00:00",
                        "date_to": "2023-05-23 00:00:00",
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                        "value_numeric": 10,
                        "value_varchar": null
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                        "attribute": {
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                        "date_from": "2017-03-28 00:00:00",
                        "date_to": "2023-05-23 00:00:00",
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                        "value_numeric": 1,
                        "value_varchar": null
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                    {
                        "attribute": {
                            "name": "aspiration"
                        },
                        "date_from": "2017-03-28 00:00:00",
                        "date_to": "2023-05-23 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "CAPACITIVY THIN FILM POLYMER"
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2017-03-28 00:00:00",
                        "date_to": "2023-05-23 00:00:00",
                        "value_date": null,
                        "value_numeric": -0.15,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2017-03-28 00:00:00",
                        "date_to": "2023-05-23 00:00:00",
                        "value_date": "2015-11-23 00:00:00",
                        "value_numeric": null,
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                    }
                ],
                "item_type": {
                    "name": "humidity_sensor"
                }
            }
        },
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            "item": {
                "comment": "Vaisala WXT530 SN: P3710986\nHumidity Sensor is 0.2 m below the antenna\ncapacitive thin film polymer HUMICAP 180 sensor",
                "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": ""
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                "contact_as_producer": {
                    "agency": {
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                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
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                        "name": "Bundesamt fuer Kartographie und Geodaesie",
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                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
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                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2023-05-24 00:00:00",
                "date_to": null,
                "item_attributes": [
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                        "attribute": {
                            "name": "sensor_model"
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                        "date_from": "2023-05-24 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "WXTPTU"
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                    {
                        "attribute": {
                            "name": "manufacturer"
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                        "date_from": "2023-05-24 00:00:00",
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                        "value_numeric": null,
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                        "date_from": "2023-05-24 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "U4430139"
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                        "attribute": {
                            "name": "data_sampling_interval"
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                        "date_from": "2023-05-24 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": "2023-05-24 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 3,
                        "value_varchar": null
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                    {
                        "attribute": {
                            "name": "aspiration"
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                        "date_from": "2023-05-24 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NATURAL"
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
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                        "date_from": "2023-05-24 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
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                        "date_from": "2023-05-24 00:00:00",
                        "date_to": null,
                        "value_date": "2023-01-03 00:00:00",
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "humidity_sensor"
                }
            }
        },
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            "item": {
                "comment": "The pressure Sensor is\n3.8 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",
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                    "role": "site_owner",
                    "title": ""
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                        "infos": "",
                        "name": "Bundesamt fuer Kartographie und Geodaesie",
                        "www": ""
                    },
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                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2003-02-11 00:00:00",
                "date_to": "2023-05-23 00:00:00",
                "item_attributes": [
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                        "attribute": {
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                        "date_from": "2003-02-11 00:00:00",
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                        "value_varchar": "X2930002"
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                        "date_to": "2023-05-23 00:00:00",
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                        "value_numeric": 10,
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                        "attribute": {
                            "name": "accuracy"
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                        "date_from": "2003-02-11 00:00:00",
                        "date_to": "2023-05-23 00:00:00",
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                        "attribute": {
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                        "date_from": "2003-02-11 00:00:00",
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                        "value_date": null,
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                            "name": "calibration_date"
                        },
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                        "date_to": "2023-05-23 00:00:00",
                        "value_date": "2002-07-22 00:00:00",
                        "value_numeric": null,
                        "value_varchar": null
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                ],
                "item_type": {
                    "name": "pressure_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "Vaisala WXT530 SN: P3710986\nPressure Sensor is 0.2 m below the antenna\ncapacitive silicon BAROCAP sensor",
                "contact_as_owner": {
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                        "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": ""
                },
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                        "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": ""
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                "date_from": "2023-05-24 00:00:00",
                "date_to": null,
                "item_attributes": [
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                        "value_numeric": null,
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                    },
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                ],
                "item_type": {
                    "name": "pressure_sensor"
                }
            }
        },
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                "contact_as_owner": {
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                        "abbreviation": "BKG",
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                    "email": "operator.gref@bkg.bund.de",
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                        "www": ""
                    },
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                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "metadata_custodian",
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                },
                "date_from": "2003-02-11 00:00:00",
                "date_to": "2010-09-15 00:00:00",
                "item_attributes": [
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                        "attribute": {
                            "name": "sensor_model"
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                        "date_to": "2010-09-15 00:00:00",
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                    },
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                    }
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                "contact_as_owner": {
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                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
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                "date_to": "2023-05-23 00:00:00",
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