PREFIX dcterms: <http://purl.org/dc/terms/>
PREFIX foaf:    <http://xmlns.com/foaf/0.1/>
PREFIX owl:     <http://www.w3.org/2002/07/owl#>
PREFIX prov:    <http://www.w3.org/ns/prov#>
PREFIX qudt:    <http://qudt.org/schema/qudt/>
PREFIX rdf:     <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs:    <http://www.w3.org/2000/01/rdf-schema#>
PREFIX skos:    <http://www.w3.org/2004/02/skos/core#>
PREFIX xsd:     <http://www.w3.org/2001/XMLSchema#>

<>      dcterms:license        <https://creativecommons.org/licenses/by/4.0/>;
        dcterms:references     <https://portal.dgiwg.org/files/68063>;
        dcterms:rights         "(C) Copyright DGIWG. Licensed under the terms in CC BY 4.0 (stated in DGIWG 206-3).";
        dcterms:rightsHolder   [ foaf:homepage  <https://dgiwg.org/>;
                                 foaf:name      "Defence Geospatial Information Working Group (DGIWG)"
                               ];
        prov:generatedAtTime   "2026-11-13T10:20:32Z"^^xsd:dateTime;
        prov:hadPrimarySource  <https://portal.dgiwg.org/files/?artifact_id=76200>;
        prov:wasAttributedTo   <../index#dgifwrap>;
        prov:wasGeneratedBy    <../index#conversion>;
        foaf:primaryTopic      <#it>;
        <../vocab#baseline>    "2026-1" .

<../feature/zi103#it>
        skos:notation   "ZI103";
        skos:prefLabel  "Magnetic Variation Information"@en .

<../feature/gb001#it>
        skos:notation   "GB001";
        skos:prefLabel  "Aerodrome"@en .

<../feature/zc050#it>
        skos:notation   "ZC050";
        skos:prefLabel  "Isogonic Line"@en .

<#it>   rdf:type              <../vocab#Attribute> , rdf:Property;
        rdfs:range            xsd:double;
        dcterms:dateAccepted  "2013-10-18"^^xsd:date;
        skos:altLabel         "Magnetic Declination"@en;
        skos:definition       "The angular difference between True North and Magnetic North measured at a given position and date."@en;
        skos:notation         "MAG";
        skos:prefLabel        "Magnetic Variation"@en;
        skos:scopeNote        "The value given indicates whether the angular difference is East (positive) or West (negative) of True North. True North is the direction of the northern point at which the geographic meridian lines meet."@en;
        <../vocab#conceptSource>  "DFDD";
        <../vocab#datatype>   "Realm180to180";
        <../vocab#name>       "magneticVariation";
        <../vocab#physicalQuantity>  "planeAngle";
        <../vocab#recommendedUnit>  [ rdfs:label  "Arc Degree"@en ];
        <../vocab#status>     "valid";
        <../vocab#usedBy>     <../feature/gb001#it> , <../feature/zc050#it> , <../feature/zi103#it> .