{
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    "adms": "http://www.w3.org/ns/adms#",
    "dcat": "https://www.w3.org/ns/dcat#",
    "dcatap": "http://data.europa.eu/r5r/",
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    "dctype": "http://purl.org/dc/dcmitype/",
    "foaf": "http://xmlns.com/foaf/0.1/",
    "gnss": "https://gnss.be/vocab/2023/gnss#",
    "locn": "http://www.w3.org/ns/locn#",
    "odrl": "http://www.w3.org/ns/odrl/2/",
    "owl": "http://www.w3.org/2002/07/owl#",
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    "rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
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    "skos": "http://www.w3.org/2004/02/skos/core#",
    "spdx": "http://spdx.org/rdf/terms#",
    "status": "https://publications.europa.eu/resource/authority/distribution-status/",
    "time": "http://www.w3.org/2006/time#",
    "vann": "http://purl.org/vocab/vann/",
    "vcard": "http://www.w3.org/2006/vcard/ns#",
    "voaf": "http://purl.org/vocommons/voaf#",
    "xsd": "http://www.w3.org/2001/XMLSchema#"
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      "dct:checksumAlgorithm": "MD5",
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        "@value": "2009-07-16T23:59:30"
      },
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        "@value": "2009-07-16T00:00:00"
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      "gnss:firmware_version": "Nav 3.8 / Boot 3.56",
      "gnss:igsModelCode": "TRIMBLE NETR5"
    },
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      "@type": "Distribution",
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      },
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      },
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      },
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        "@value": "2009-07-16T00:00:00"
      },
      "dct:license": {
        "@id": "https://epncb.oma.be/PID/USDL00POL#license"
      },
      "dct:modified": {
        "@type": "xsd:dateTime",
        "@value": "2014-01-14T13:32:13"
      },
      "dct:title": "USDL1970.09D.Z",
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      },
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      },
      "mediaType": "application/octet-stream",
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      "@type": "gnss:OBSData",
      "gnss:compressFormat": {
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      },
      "gnss:format": {
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      "gnss:frequency": {
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      "gnss:obsHeader": {
        "@id": "https://epncb.oma.be/PID/2009/197/USDL00POL_2009197_01D_30S_R2#obsheader"
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      "gnss:station": {
        "@id": "https://epncb.oma.be/PID/USDL00POL#station"
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    },
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      "gnss:antenna": {
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      },
      "gnss:interval": {
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        "@value": "30"
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      "gnss:issued": {
        "@type": "xsd:dateTime",
        "@value": "2009-07-16T00:00:00"
      },
      "gnss:markerName": "USDL00POL",
      "gnss:receiver": {
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      },
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      }
    },
    {
      "@id": "https://epncb.oma.be/PID/2009/197/USDL00POL_2009197_01D_30S_R2#antenna",
      "gnss:igsModelCode": "TRM55971.00     TZGD",
      "gnss:marker-arpEastEcc": {
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        "@value": "0.0"
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      "gnss:marker-arpNorthEcc": {
        "@type": "xsd:float",
        "@value": "0.0"
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      "gnss:marker-arpUpEcc": {
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        "@value": "0.0"
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}