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                        "value_numeric": 0,
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                    "comment": "",
                    "email": "ptbb@ptb.de",
                    "name": "PTBB Operator",
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            "item": {
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                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
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                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
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                    "role": "site_owner",
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                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "PTB",
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                    "comment": "",
                    "email": "ptbb@ptb.de",
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                    "agency": {
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                "item_attributes": [
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                        "attribute": {
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                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
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                    "comment": "",
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                "item_type": {
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        },
        {
            "item": {
                "comment": "PTB Physikalisch-Technische Bundesanstalt\nis responsible for the realisation of the\nlegal time in Germany.\nExternal frequency from the active\nH-Maser and downstream phase shifter.\nUTC PTB.",
                "contact_as_owner": {
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                        "abbreviation": "BKG",
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                        "name": "Bundesamt fuer Kartographie und Geodaesie",
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                        "name": "Physikalisch-Technische Bundesanstalt",
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                ],
                "item_type": {
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                        "abbreviation": "BKG",
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                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2003-10-01 00:00:00",
                        "date_to": "2019-03-25 00:00:00",
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                        "value_varchar": "0502099A"
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                    {
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                            "name": "data_sampling_interval"
                        },
                        "date_from": "2003-10-01 00:00:00",
                        "date_to": "2019-03-25 00:00:00",
                        "value_date": null,
                        "value_numeric": 900,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2003-10-01 00:00:00",
                        "date_to": "2019-03-25 00:00:00",
                        "value_date": null,
                        "value_numeric": 0.1,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2003-10-01 00:00:00",
                        "date_to": "2019-03-25 00:00:00",
                        "value_date": null,
                        "value_numeric": 9.2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2003-10-01 00:00:00",
                        "date_to": "2019-03-25 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "pressure_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "Pressure Sensor is 3.00 m below the antenna",
                "contact_as_owner": {
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                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
                        "infos": "",
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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": "PTB",
                        "address": "Bundesallee 100\nD-38116 Braunschweig\nGermany",
                        "infos": "",
                        "name": "Physikalisch-Technische Bundesanstalt",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ptbb@ptb.de",
                    "name": "PTBB Operator",
                    "phone": "+49 531 5924418",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2019-03-26 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2019-03-26 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
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                    {
                        "attribute": {
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                    {
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                        "attribute": {
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                        "attribute": {
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                    {
                        "attribute": {
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                        "value_numeric": 3,
                        "value_varchar": null
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                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2019-03-26 00:00:00",
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                    }
                ],
                "item_type": {
                    "name": "pressure_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "Temperature Sensor is\n3.00 m below the antenna",
                "contact_as_owner": {
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                        "abbreviation": "BKG",
                        "address": "Richard-Strauss-Allee 11\nD-60598 Frankfurt a.M.\nGermany",
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                        "www": ""
                    },
                    "comment": "",
                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "PTB",
                        "address": "Bundesallee 100\nD-38116 Braunschweig\nGermany",
                        "infos": "",
                        "name": "Physikalisch-Technische Bundesanstalt",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ptbb@ptb.de",
                    "name": "PTBB Operator",
                    "phone": "+49 531 5924418",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2002-07-16 00:00:00",
                "date_to": "2019-03-25 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2002-07-16 00:00:00",
                        "date_to": "2019-03-25 00:00:00",
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                        "value_numeric": null,
                        "value_varchar": "MP408A-T4-W4W"
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                    {
                        "attribute": {
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                        "date_to": "2019-03-25 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "ROTRONIC"
                    },
                    {
                        "attribute": {
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                        },
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                        "date_to": "2019-03-25 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "14148 004"
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                    {
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                        "attribute": {
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                        "date_to": "2019-03-25 00:00:00",
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                    },
                    {
                        "attribute": {
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                        "date_to": "2019-03-25 00:00:00",
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                    {
                        "attribute": {
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                        },
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                        "date_to": "2019-03-25 00:00:00",
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                        "attribute": {
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                    }
                ],
                "item_type": {
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                }
            }
        },
        {
            "item": {
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                "contact_as_owner": {
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                    },
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                    "email": "operator.gref@bkg.bund.de",
                    "name": "GREF Operator",
                    "phone": "+49 341 5634410",
                    "role": "site_owner",
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                        "name": "Physikalisch-Technische Bundesanstalt",
                        "www": ""
                    },
                    "comment": "",
                    "email": "ptbb@ptb.de",
                    "name": "PTBB Operator",
                    "phone": "+49 531 5924418",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2019-03-26 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
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                        "value_varchar": "L4310380"
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                ],
                "item_type": {
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                }
            }
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    ],
    "station_networks": [
        {
            "name": "EPN"
        },
        {
            "name": "EPOS"
        },
        {
            "name": "IGS"
        }
    ],
    "station_type": "GNSS Continuous"
}