@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix gsp: <http://www.opengis.net/ont/geosparql#> .
@prefix locn: <http://www.w3.org/ns/locn#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.amerigeoss.org/dataset/08aa7ff6-2716-400f-8167-5f652afbdc53> a dcat:Dataset ;
    dct:description "All the data contributed come from 1957 through 1990. They have been digitized, reformatted, converted to universal time (the software also can display the data in local meridian time), and passed through quality control filters." ;
    dct:identifier "gov.noaa.ngdc.stp.ionosonde:3091" ;
    dct:issued "2025-11-19T21:30:05.310532"^^xsd:dateTime ;
    dct:modified "2025-11-19T21:30:05.310539"^^xsd:dateTime ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-180.0000 -90.0000, 180.0000 -90.0000, 180.0000 90.0000, -180.0000 90.0000, -180.0000 -90.0000))"^^gsp:wktLiteral ] ;
    dct:title "Scaled Data from Digital Ionograms" ;
    dcat:keyword "amerigeo",
        "amerigeoss",
        "atmosphere",
        "ckan",
        "communications",
        "geo",
        "geoss",
        "indices",
        "ionosphere",
        "national",
        "north-america",
        "remote-sensing",
        "space-physics",
        "united-states" .

<https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> a foaf:Agent ;
    foaf:name "US Migrating" .