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                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "full serial number is 1294-10702",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "RIGTC GOP",
                        "address": "Pecny 244\nCZ-25165 Ondrejov\nCzechia",
                        "infos": "",
                        "name": "Research Institute of Geodesy, Topography and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gop_oc@pecny.cz",
                    "name": "GOP operation center",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "VSB - TUO",
                        "address": "Vysoka skola banska-Technicka univerzita Ostrava 15 \/ 70833\n17. listopadu 15 Institut geoinformatiky\nCzechia",
                        "infos": "",
                        "name": "VSB - Technical University Ostrava",
                        "www": ""
                    },
                    "comment": "",
                    "email": "kat548@vsb.cz",
                    "name": "K548 department",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2021-08-09 10:25:00",
                "date_to": "2022-11-22 18:08:00",
                "item_attributes": [
                    {
                        "attribute": {
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                        "date_to": "2022-11-22 18:08:00",
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                    {
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                        "date_to": "2022-11-22 18:08:00",
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                        "value_numeric": null,
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                    {
                        "attribute": {
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                        "date_to": "2022-11-22 18:08:00",
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                        "date_to": "2022-11-22 18:08:00",
                        "value_date": null,
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                    {
                        "attribute": {
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                        "date_to": "2022-11-22 18:08:00",
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                        "value_numeric": 1,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "full serial number is 1294-10702",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "RIGTC GOP",
                        "address": "Pecny 244\nCZ-25165 Ondrejov\nCzechia",
                        "infos": "",
                        "name": "Research Institute of Geodesy, Topography and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gop_oc@pecny.cz",
                    "name": "GOP operation center",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "VSB - TUO",
                        "address": "Vysoka skola banska-Technicka univerzita Ostrava 15 \/ 70833\n17. listopadu 15 Institut geoinformatiky\nCzechia",
                        "infos": "",
                        "name": "VSB - Technical University Ostrava",
                        "www": ""
                    },
                    "comment": "",
                    "email": "kat548@vsb.cz",
                    "name": "K548 department",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2022-11-22 18:20:00",
                "date_to": "2024-06-03 19:00:00",
                "item_attributes": [
                    {
                        "attribute": {
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                        "date_to": "2024-06-03 19:00:00",
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                        "value_varchar": "TPS NET-G5"
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                    {
                        "attribute": {
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                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "full serial number is 1294-13004",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "RIGTC GOP",
                        "address": "Pecny 244\nCZ-25165 Ondrejov\nCzechia",
                        "infos": "",
                        "name": "Research Institute of Geodesy, Topography and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gop_oc@pecny.cz",
                    "name": "GOP operation center",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "VSB - TUO",
                        "address": "Vysoka skola banska-Technicka univerzita Ostrava 15 \/ 70833\n17. listopadu 15 Institut geoinformatiky\nCzechia",
                        "infos": "",
                        "name": "VSB - Technical University Ostrava",
                        "www": ""
                    },
                    "comment": "",
                    "email": "kat548@vsb.cz",
                    "name": "K548 department",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2024-06-05 11:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "receiver_type"
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                        "value_numeric": null,
                        "value_varchar": "TPS NET-G5"
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                        "attribute": {
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                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "receiver"
                }
            }
        },
        {
            "item": {
                "comment": "full serial number is 2170442",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "RIGTC GOP",
                        "address": "Pecny 244\nCZ-25165 Ondrejov\nCzechia",
                        "infos": "",
                        "name": "Research Institute of Geodesy, Topography and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gop_oc@pecny.cz",
                    "name": "GOP operation center",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
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                        "abbreviation": "VSB - TUO",
                        "address": "Vysoka skola banska-Technicka univerzita Ostrava 15 \/ 70833\n17. listopadu 15 Institut geoinformatiky\nCzechia",
                        "infos": "",
                        "name": "VSB - Technical University Ostrava",
                        "www": ""
                    },
                    "comment": "",
                    "email": "kat548@vsb.cz",
                    "name": "K548 department",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2005-06-22 16:20:00",
                "date_to": "2008-09-29 08:30:00",
                "item_attributes": [
                    {
                        "attribute": {
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                        "date_from": "2005-06-22 16:20:00",
                        "date_to": "2008-09-29 08:30:00",
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                        "value_numeric": null,
                        "value_varchar": "TPSCR3_GGD"
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                    {
                        "attribute": {
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                        "date_to": "2008-09-29 08:30:00",
                        "value_date": null,
                        "value_numeric": null,
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                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
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                        "date_from": "2005-06-22 16:20:00",
                        "date_to": "2008-09-29 08:30:00",
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                        "value_numeric": null,
                        "value_varchar": "BPA"
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                        "attribute": {
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                        "attribute": {
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                        "date_to": "2008-09-29 08:30:00",
                        "value_date": null,
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                            "name": "alignment_from_true_n"
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                        "value_date": null,
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                        "attribute": {
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                        "date_to": "2008-09-29 08:30:00",
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                        "date_to": "2008-09-29 08:30:00",
                        "value_date": null,
                        "value_numeric": 24,
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                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": "full serial number is 2170442",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "RIGTC GOP",
                        "address": "Pecny 244\nCZ-25165 Ondrejov\nCzechia",
                        "infos": "",
                        "name": "Research Institute of Geodesy, Topography and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gop_oc@pecny.cz",
                    "name": "GOP operation center",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "VSB - TUO",
                        "address": "Vysoka skola banska-Technicka univerzita Ostrava 15 \/ 70833\n17. listopadu 15 Institut geoinformatiky\nCzechia",
                        "infos": "",
                        "name": "VSB - Technical University Ostrava",
                        "www": ""
                    },
                    "comment": "",
                    "email": "kat548@vsb.cz",
                    "name": "K548 department",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2005-06-22 16:20:00",
                "date_to": "2008-09-29 08:30:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
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                        "date_from": "2005-06-22 16:20:00",
                        "date_to": "2008-09-29 08:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "CONE"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
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                        "date_to": "2008-09-29 08:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "none"
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": "full serial number is 383-0594",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "RIGTC GOP",
                        "address": "Pecny 244\nCZ-25165 Ondrejov\nCzechia",
                        "infos": "",
                        "name": "Research Institute of Geodesy, Topography and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gop_oc@pecny.cz",
                    "name": "GOP operation center",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "VSB - TUO",
                        "address": "Vysoka skola banska-Technicka univerzita Ostrava 15 \/ 70833\n17. listopadu 15 Institut geoinformatiky\nCzechia",
                        "infos": "",
                        "name": "VSB - Technical University Ostrava",
                        "www": ""
                    },
                    "comment": "",
                    "email": "kat548@vsb.cz",
                    "name": "K548 department",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2009-05-08 00:00:00",
                "date_to": "2019-10-04 09:30:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
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                        "date_from": "2009-05-08 00:00:00",
                        "date_to": "2019-10-04 09:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TPSCR.G3"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
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                        "date_from": "2009-05-08 00:00:00",
                        "date_to": "2019-10-04 09:30:00",
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                        "value_numeric": null,
                        "value_varchar": "30594"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
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                        "date_from": "2009-05-08 00:00:00",
                        "date_to": "2019-10-04 09:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BPA"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
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                        "date_from": "2009-05-08 00:00:00",
                        "date_to": "2019-10-04 09:30:00",
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                        "attribute": {
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                        "value_date": null,
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                        "attribute": {
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                        "date_to": "2019-10-04 09:30:00",
                        "value_date": null,
                        "value_numeric": 0,
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                    },
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                        "attribute": {
                            "name": "alignment_from_true_n"
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                        "date_from": "2009-05-08 00:00:00",
                        "date_to": "2019-10-04 09:30:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
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                        "date_from": "2009-05-08 00:00:00",
                        "date_to": "2019-10-04 09:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GES ELECTRONICS RG213\/U + TOPCON cable"
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
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                        "date_from": "2009-05-08 00:00:00",
                        "date_to": "2019-10-04 09:30:00",
                        "value_date": null,
                        "value_numeric": 24,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": "full serial number is 383-0594",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "RIGTC GOP",
                        "address": "Pecny 244\nCZ-25165 Ondrejov\nCzechia",
                        "infos": "",
                        "name": "Research Institute of Geodesy, Topography and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gop_oc@pecny.cz",
                    "name": "GOP operation center",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "VSB - TUO",
                        "address": "Vysoka skola banska-Technicka univerzita Ostrava 15 \/ 70833\n17. listopadu 15 Institut geoinformatiky\nCzechia",
                        "infos": "",
                        "name": "VSB - Technical University Ostrava",
                        "www": ""
                    },
                    "comment": "",
                    "email": "kat548@vsb.cz",
                    "name": "K548 department",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2009-05-08 00:00:00",
                "date_to": "2019-10-04 09:30:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
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                        "date_from": "2009-05-08 00:00:00",
                        "date_to": "2019-10-04 09:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TPSH"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2009-05-08 00:00:00",
                        "date_to": "2019-10-04 09:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "none"
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": "full serial number is 762-13199",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "RIGTC GOP",
                        "address": "Pecny 244\nCZ-25165 Ondrejov\nCzechia",
                        "infos": "",
                        "name": "Research Institute of Geodesy, Topography and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gop_oc@pecny.cz",
                    "name": "GOP operation center",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "VSB - TUO",
                        "address": "Vysoka skola banska-Technicka univerzita Ostrava 15 \/ 70833\n17. listopadu 15 Institut geoinformatiky\nCzechia",
                        "infos": "",
                        "name": "VSB - Technical University Ostrava",
                        "www": ""
                    },
                    "comment": "",
                    "email": "kat548@vsb.cz",
                    "name": "K548 department",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2019-10-04 11:45:00",
                "date_to": "2021-05-27 08:30:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2019-10-04 11:45:00",
                        "date_to": "2021-05-27 08:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TPSCR.G5"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2019-10-04 11:45:00",
                        "date_to": "2021-05-27 08:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "13199"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2019-10-04 11:45:00",
                        "date_to": "2021-05-27 08:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BPA"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2019-10-04 11:45:00",
                        "date_to": "2021-05-27 08:30:00",
                        "value_date": null,
                        "value_numeric": 0.1727,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2019-10-04 11:45:00",
                        "date_to": "2021-05-27 08:30:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2019-10-04 11:45:00",
                        "date_to": "2021-05-27 08:30:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2019-10-04 11:45:00",
                        "date_to": "2021-05-27 08:30:00",
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2019-10-04 11:45:00",
                        "date_to": "2021-05-27 08:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GES ELECTRONICS RG213\/U + TOPCON cable"
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2019-10-04 11:45:00",
                        "date_to": "2021-05-27 08:30:00",
                        "value_date": null,
                        "value_numeric": 24,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": "full serial number is 762-13199",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "RIGTC GOP",
                        "address": "Pecny 244\nCZ-25165 Ondrejov\nCzechia",
                        "infos": "",
                        "name": "Research Institute of Geodesy, Topography and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gop_oc@pecny.cz",
                    "name": "GOP operation center",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "VSB - TUO",
                        "address": "Vysoka skola banska-Technicka univerzita Ostrava 15 \/ 70833\n17. listopadu 15 Institut geoinformatiky\nCzechia",
                        "infos": "",
                        "name": "VSB - Technical University Ostrava",
                        "www": ""
                    },
                    "comment": "",
                    "email": "kat548@vsb.cz",
                    "name": "K548 department",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2019-10-04 11:45:00",
                "date_to": "2021-05-27 08:30:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2019-10-04 11:45:00",
                        "date_to": "2021-05-27 08:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TPSH"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2019-10-04 11:45:00",
                        "date_to": "2021-05-27 08:30:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "none"
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": "full serial number is 1364-10163",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "RIGTC GOP",
                        "address": "Pecny 244\nCZ-25165 Ondrejov\nCzechia",
                        "infos": "",
                        "name": "Research Institute of Geodesy, Topography and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gop_oc@pecny.cz",
                    "name": "GOP operation center",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "VSB - TUO",
                        "address": "Vysoka skola banska-Technicka univerzita Ostrava 15 \/ 70833\n17. listopadu 15 Institut geoinformatiky\nCzechia",
                        "infos": "",
                        "name": "VSB - Technical University Ostrava",
                        "www": ""
                    },
                    "comment": "",
                    "email": "kat548@vsb.cz",
                    "name": "K548 department",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2021-05-27 11:43:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "antenna_type"
                        },
                        "date_from": "2021-05-27 11:43:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TPSCR.G5C"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2021-05-27 11:43:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1364-10163"
                    },
                    {
                        "attribute": {
                            "name": "antenna_reference_point"
                        },
                        "date_from": "2021-05-27 11:43:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "BPA"
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_up_ecc"
                        },
                        "date_from": "2021-05-27 11:43:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0.1727,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_north_ecc"
                        },
                        "date_from": "2021-05-27 11:43:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "marker_arp_east_ecc"
                        },
                        "date_from": "2021-05-27 11:43:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "alignment_from_true_n"
                        },
                        "date_from": "2021-05-27 11:43:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 0,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_type"
                        },
                        "date_from": "2021-05-27 11:43:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "GES ELECTRONIC"
                    },
                    {
                        "attribute": {
                            "name": "antenna_cable_length"
                        },
                        "date_from": "2021-05-27 11:43:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": 30,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "antenna"
                }
            }
        },
        {
            "item": {
                "comment": "full serial number is 1364-10163",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "RIGTC GOP",
                        "address": "Pecny 244\nCZ-25165 Ondrejov\nCzechia",
                        "infos": "",
                        "name": "Research Institute of Geodesy, Topography and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gop_oc@pecny.cz",
                    "name": "GOP operation center",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "VSB - TUO",
                        "address": "Vysoka skola banska-Technicka univerzita Ostrava 15 \/ 70833\n17. listopadu 15 Institut geoinformatiky\nCzechia",
                        "infos": "",
                        "name": "VSB - Technical University Ostrava",
                        "www": ""
                    },
                    "comment": "",
                    "email": "kat548@vsb.cz",
                    "name": "K548 department",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2021-05-27 11:43:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "radome_type"
                        },
                        "date_from": "2021-05-27 11:43:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TPSH"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2021-05-27 11:43:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "none"
                    }
                ],
                "item_type": {
                    "name": "radome"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "RIGTC GOP",
                        "address": "Pecny 244\nCZ-25165 Ondrejov\nCzechia",
                        "infos": "",
                        "name": "Research Institute of Geodesy, Topography and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gop_oc@pecny.cz",
                    "name": "GOP operation center",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "VSB - TUO",
                        "address": "Vysoka skola banska-Technicka univerzita Ostrava 15 \/ 70833\n17. listopadu 15 Institut geoinformatiky\nCzechia",
                        "infos": "",
                        "name": "VSB - Technical University Ostrava",
                        "www": ""
                    },
                    "comment": "",
                    "email": "kat548@vsb.cz",
                    "name": "K548 department",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2005-06-22 00:00:00",
                "date_to": null,
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "standard_type"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "INTERNAL"
                    },
                    {
                        "attribute": {
                            "name": "input_frequency"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": null,
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "frequency_standard"
                }
            }
        },
        {
            "item": {
                "comment": "the sensor is 0.15 m below monument marker\r\n(reference point LYSH 11522M001)\r\nsensor was compared with the similar sensor\r\non the GOPE station",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "RIGTC GOP",
                        "address": "Pecny 244\nCZ-25165 Ondrejov\nCzechia",
                        "infos": "",
                        "name": "Research Institute of Geodesy, Topography and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gop_oc@pecny.cz",
                    "name": "GOP operation center",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "VSB - TUO",
                        "address": "Vysoka skola banska-Technicka univerzita Ostrava 15 \/ 70833\n17. listopadu 15 Institut geoinformatiky\nCzechia",
                        "infos": "",
                        "name": "VSB - Technical University Ostrava",
                        "www": ""
                    },
                    "comment": "",
                    "email": "kat548@vsb.cz",
                    "name": "K548 department",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2005-06-22 00:00:00",
                "date_to": "2008-09-29 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TH99"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "ANEMO, CZ"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TH904400"
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": 60,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": 3,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "aspiration"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NATURAL"
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": -0.15,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": "2004-12-04 00:00:00",
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "humidity_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "the sensor is 0.12 m below monument marker\r\n(reference point LYSH 11522M001)\r\nsensor was compared with the similar sensor\r\non the GOPE station",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "RIGTC GOP",
                        "address": "Pecny 244\nCZ-25165 Ondrejov\nCzechia",
                        "infos": "",
                        "name": "Research Institute of Geodesy, Topography and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gop_oc@pecny.cz",
                    "name": "GOP operation center",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "VSB - TUO",
                        "address": "Vysoka skola banska-Technicka univerzita Ostrava 15 \/ 70833\n17. listopadu 15 Institut geoinformatiky\nCzechia",
                        "infos": "",
                        "name": "VSB - Technical University Ostrava",
                        "www": ""
                    },
                    "comment": "",
                    "email": "kat548@vsb.cz",
                    "name": "K548 department",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2005-06-22 00:00:00",
                "date_to": "2008-09-29 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TMAG 518 N4F"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "CRESSTO, CZ"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "1998\/04"
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": 60,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": 0.2,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": -0.12,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": "2004-12-04 00:00:00",
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "pressure_sensor"
                }
            }
        },
        {
            "item": {
                "comment": "the sensor is 0.15 m below monument marker\r\n(reference point LYSH 11522M001)\r\nsensor was compared with the similar sensor\r\non the GOPE station",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "RIGTC GOP",
                        "address": "Pecny 244\nCZ-25165 Ondrejov\nCzechia",
                        "infos": "",
                        "name": "Research Institute of Geodesy, Topography and Cartography",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gop_oc@pecny.cz",
                    "name": "GOP operation center",
                    "phone": "",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "VSB - TUO",
                        "address": "Vysoka skola banska-Technicka univerzita Ostrava 15 \/ 70833\n17. listopadu 15 Institut geoinformatiky\nCzechia",
                        "infos": "",
                        "name": "VSB - Technical University Ostrava",
                        "www": ""
                    },
                    "comment": "",
                    "email": "kat548@vsb.cz",
                    "name": "K548 department",
                    "phone": "",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2005-06-22 00:00:00",
                "date_to": "2008-09-29 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "sensor_model"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TH99"
                    },
                    {
                        "attribute": {
                            "name": "manufacturer"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "ANEMO, CZ"
                    },
                    {
                        "attribute": {
                            "name": "serial_number"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "TH904400"
                    },
                    {
                        "attribute": {
                            "name": "data_sampling_interval"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": 60,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "accuracy"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": 0.3,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "aspiration"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "NATURAL"
                    },
                    {
                        "attribute": {
                            "name": "height_diff_to_ant"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": null,
                        "value_numeric": -0.15,
                        "value_varchar": null
                    },
                    {
                        "attribute": {
                            "name": "calibration_date"
                        },
                        "date_from": "2005-06-22 00:00:00",
                        "date_to": "2008-09-29 00:00:00",
                        "value_date": "2004-12-04 00:00:00",
                        "value_numeric": null,
                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "temperature_sensor"
                }
            }
        }
    ],
    "station_networks": [
        {
            "name": "VESOG"
        }
    ],
    "station_type": "GNSS Continuous"
}