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                ],
                "item_type": {
                    "name": "receiver"
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            }
        },
        {
            "item": {
                "comment": "(multiples lines)",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
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                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
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                "contact_as_producer": {
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                        "abbreviation": "DUT",
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                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
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                "date_from": "2010-07-22 11:36:00",
                "date_to": "2012-04-20 10:45:00",
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        },
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            "item": {
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                        "abbreviation": "DUT",
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                        "abbreviation": "DUT",
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            "item": {
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        },
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        },
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            "item": {
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                        "date_to": "2023-04-17 15:24:00",
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                    {
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                ],
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            "item": {
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                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
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                    "email": "gnss-citg@tudelft.nl",
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                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
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                        "abbreviation": "DUT",
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        },
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                        "abbreviation": "DUT",
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                },
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                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "metadata_custodian",
                    "title": ""
                },
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                "date_to": null,
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                "item_type": {
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        },
        {
            "item": {
                "comment": "Oscilloquartz Neuchatel Type LSRH H3",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "1997-06-01 00:00:00",
                "date_to": "1998-02-28 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "standard_type"
                        },
                        "date_from": "1997-06-01 00:00:00",
                        "date_to": "1998-02-28 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "EXTERNAL H-MASER"
                    },
                    {
                        "attribute": {
                            "name": "input_frequency"
                        },
                        "date_from": "1997-06-01 00:00:00",
                        "date_to": "1998-02-28 00:00:00",
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                        "value_numeric": 5,
                        "value_varchar": null
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                ],
                "item_type": {
                    "name": "frequency_standard"
                }
            }
        },
        {
            "item": {
                "comment": "Oscilloquartz Neuchatel Type LSRH H3",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "1998-02-28 00:00:00",
                "date_to": "1998-03-26 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "standard_type"
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                        "date_from": "1998-02-28 00:00:00",
                        "date_to": "1998-03-26 00:00:00",
                        "value_date": null,
                        "value_numeric": null,
                        "value_varchar": "EXTERNAL QUARTZ"
                    },
                    {
                        "attribute": {
                            "name": "input_frequency"
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                        "date_from": "1998-02-28 00:00:00",
                        "date_to": "1998-03-26 00:00:00",
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                        "value_varchar": null
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                ],
                "item_type": {
                    "name": "frequency_standard"
                }
            }
        },
        {
            "item": {
                "comment": "HP Rubidium standard,type 5065A,S\/N 1736 A 0811",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "1998-03-26 00:00:00",
                "date_to": "1999-05-18 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "standard_type"
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                        "date_from": "1998-03-26 00:00:00",
                        "date_to": "1999-05-18 00:00:00",
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                    },
                    {
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                        },
                        "date_from": "1998-03-26 00:00:00",
                        "date_to": "1999-05-18 00:00:00",
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                    }
                ],
                "item_type": {
                    "name": "frequency_standard"
                }
            }
        },
        {
            "item": {
                "comment": "SIGMA TAU HYDROGEN MASER,\r\nmodel MHM - 2010 S\/N 0204",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "1999-05-18 00:00:00",
                "date_to": "2000-01-06 00:00:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "standard_type"
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                        "date_from": "1999-05-18 00:00:00",
                        "date_to": "2000-01-06 00:00:00",
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                        "value_numeric": null,
                        "value_varchar": "EXTERNAL H-MASER"
                    },
                    {
                        "attribute": {
                            "name": "input_frequency"
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                        "date_from": "1999-05-18 00:00:00",
                        "date_to": "2000-01-06 00:00:00",
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                        "value_varchar": null
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                ],
                "item_type": {
                    "name": "frequency_standard"
                }
            }
        },
        {
            "item": {
                "comment": null,
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
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                },
                "date_from": "2000-01-06 00:00:00",
                "date_to": "2000-01-17 00:00:00",
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                ],
                "item_type": {
                    "name": "frequency_standard"
                }
            }
        },
        {
            "item": {
                "comment": "SIGMA TAU HYDROGEN MASER,\r\nmodel MHM - 2010 S\/N 0204",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2000-01-17 00:00:00",
                "date_to": "2018-11-19 11:10:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "standard_type"
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                        "date_from": "2000-01-17 00:00:00",
                        "date_to": "2018-11-19 11:10:00",
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                    },
                    {
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                            "name": "input_frequency"
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                        "date_from": "2000-01-17 00:00:00",
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                        "value_varchar": null
                    }
                ],
                "item_type": {
                    "name": "frequency_standard"
                }
            }
        },
        {
            "item": {
                "comment": "standford research FS725",
                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
                    "title": ""
                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2018-11-19 11:10:00",
                "date_to": "2019-02-12 12:20:00",
                "item_attributes": [
                    {
                        "attribute": {
                            "name": "standard_type"
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                        "date_from": "2018-11-19 11:10:00",
                        "date_to": "2019-02-12 12:20:00",
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                ],
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        },
        {
            "item": {
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                "contact_as_owner": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
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                },
                "contact_as_producer": {
                    "agency": {
                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "metadata_custodian",
                    "title": ""
                },
                "date_from": "2019-02-13 09:03:00",
                "date_to": "2023-12-07 09:45:00",
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        {
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                        "abbreviation": "DUT",
                        "address": "Stevinweg 1\n2628 CN Delft\nNetherlands (the)",
                        "infos": "",
                        "name": "Delft University of Technology",
                        "www": ""
                    },
                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
                    "phone": "+31 15 2784907",
                    "role": "site_owner",
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                    "comment": "",
                    "email": "gnss-citg@tudelft.nl",
                    "name": "TU Delft GNSS team",
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                    }
                ],
                "item_type": {
                    "name": "frequency_standard"
                }
            }
        }
    ],
    "station_networks": [
        {
            "name": "AGRS.NL"
        },
        {
            "name": "EPN"
        },
        {
            "name": "EPOS"
        },
        {
            "name": "IGS"
        }
    ],
    "station_type": "GNSS Continuous"
}