{
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      },
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        "@type": "xsd:dateTime",
        "@value": "2017-05-02T09:10:25"
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      "gnss:igsModelCode": "JAVAD TRE_G3TH DELTA"
    },
    {
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      "@type": "PeriodOfTime",
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      "gnss:igsModelCode": "ASH701945B_M    SNOW",
      "gnss:marker-arpEastEcc": {
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}