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                        "date_from": "2000-10-16 15:00:00",
                        "date_to": "2016-09-26 11:23:00",
                        "value_date": null,
                        "value_numeric": 30,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": "A preamplifier for the antenna cable was added.",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "EOST",
                        "address": "rue Ren\u00e9 Descartes 5\nF-67084 Strasbourg Cedex\nFrance",
                        "infos": "",
                        "name": "Ecole et Observatoire des Sciences de la Terre",
                        "www": ""
                    },
                    "comment": "",
                    "email": "renag-eost@eost.unistra.fr",
                    "name": "EOST GNSS team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "EOST",
                        "address": "rue Ren\u00e9 Descartes 5\nF-67084 Strasbourg Cedex\nFrance",
                        "infos": "",
                        "name": "Ecole et Observatoire des Sciences de la Terre",
                        "www": ""
                    },
                    "comment": "",
                    "email": "renag-eost@eost.unistra.fr",
                    "name": "EOST GNSS team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2000-10-16 15:00:00",
                "date_to": "2016-09-26 11:23:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2000-10-16 15:00:00",
                        "date_to": "2016-09-26 11:23:00",
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                    },
                    {
                        "attribute": {
                            "name": "serial_number"
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                        "date_to": "2016-09-26 11:23:00",
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                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": "The same preamplifier is still present.\r\nComplete antenna number is P\/N 57971-00 DC5530",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "EOST",
                        "address": "rue Ren\u00e9 Descartes 5\nF-67084 Strasbourg Cedex\nFrance",
                        "infos": "",
                        "name": "Ecole et Observatoire des Sciences de la Terre",
                        "www": ""
                    },
                    "comment": "",
                    "email": "renag-eost@eost.unistra.fr",
                    "name": "EOST GNSS team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "EOST",
                        "address": "rue Ren\u00e9 Descartes 5\nF-67084 Strasbourg Cedex\nFrance",
                        "infos": "",
                        "name": "Ecole et Observatoire des Sciences de la Terre",
                        "www": ""
                    },
                    "comment": "",
                    "email": "renag-eost@eost.unistra.fr",
                    "name": "EOST GNSS team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2016-09-26 11:41:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2016-09-26 11:41:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TRM57971.00"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2016-09-26 11:41:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1412756168"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2016-09-26 11:41:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BAM"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2016-09-26 11:41:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2016-09-26 11:41:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2016-09-26 11:41:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2016-09-26 11:41:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2016-09-26 11:41:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "RG213"
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2016-09-26 11:41:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 30,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": "The same preamplifier is still present.\r\nComplete antenna number is P\/N 57971-00 DC5530",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "EOST",
                        "address": "rue Ren\u00e9 Descartes 5\nF-67084 Strasbourg Cedex\nFrance",
                        "infos": "",
                        "name": "Ecole et Observatoire des Sciences de la Terre",
                        "www": ""
                    },
                    "comment": "",
                    "email": "renag-eost@eost.unistra.fr",
                    "name": "EOST GNSS team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "EOST",
                        "address": "rue Ren\u00e9 Descartes 5\nF-67084 Strasbourg Cedex\nFrance",
                        "infos": "",
                        "name": "Ecole et Observatoire des Sciences de la Terre",
                        "www": ""
                    },
                    "comment": "",
                    "email": "renag-eost@eost.unistra.fr",
                    "name": "EOST GNSS team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2016-09-26 11:41:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2016-09-26 11:41:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TZGD"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2016-09-26 11:41:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "EOST",
                        "address": "rue Ren\u00e9 Descartes 5\nF-67084 Strasbourg Cedex\nFrance",
                        "infos": "",
                        "name": "Ecole et Observatoire des Sciences de la Terre",
                        "www": ""
                    },
                    "comment": "",
                    "email": "renag-eost@eost.unistra.fr",
                    "name": "EOST GNSS team",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "EOST",
                        "address": "rue Ren\u00e9 Descartes 5\nF-67084 Strasbourg Cedex\nFrance",
                        "infos": "",
                        "name": "Ecole et Observatoire des Sciences de la Terre",
                        "www": ""
                    },
                    "comment": "",
                    "email": "renag-eost@eost.unistra.fr",
                    "name": "EOST GNSS team",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2000-10-16 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "standard_type"
                        },
                        "date_from": "2000-10-16 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "INTERNAL"
                    },
                    {
                        "attribute": {
                            "name": "input_frequency"
                        },
                        "date_from": "2000-10-16 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "frequency_standard"
                }
            }
        }
    ],
    "station_networks": [
        {
            "name": "EPOS"
        },
        {
            "name": "RENAG"
        },
        {
            "name": "RGP"
        }
    ],
    "station_type": "GNSS Continuous"
}