{
  "@context": {
    "@vocab": "https://schema.org/",
    "adsb": "https://www.adsbexchange.com/terms/",
    "aviation": "https://www.faa.gov/aviation/",
    "name": "schema:name",
    "description": "schema:description",
    "url": "schema:url",
    "provider": "schema:provider",
    "aircraft": {
      "@id": "adsb:aircraft",
      "@type": "@id"
    },
    "hex": {
      "@id": "adsb:icaoHex",
      "@comment": "24-bit ICAO identifier as 6 hex digits"
    },
    "flight": {
      "@id": "adsb:callsign",
      "@comment": "Callsign up to 8 characters"
    },
    "r": {
      "@id": "adsb:registration",
      "@comment": "Aircraft tail number registration"
    },
    "t": {
      "@id": "adsb:aircraftType",
      "@comment": "ICAO aircraft type designator"
    },
    "lat": {
      "@id": "schema:latitude",
      "@type": "xsd:decimal"
    },
    "lon": {
      "@id": "schema:longitude",
      "@type": "xsd:decimal"
    },
    "alt_baro": {
      "@id": "adsb:baroAltitude",
      "@comment": "Barometric altitude in feet"
    },
    "alt_geom": {
      "@id": "adsb:geometricAltitude",
      "@comment": "Geometric altitude in feet"
    },
    "gs": {
      "@id": "adsb:groundSpeed",
      "@comment": "Ground speed in knots"
    },
    "track": {
      "@id": "adsb:track",
      "@comment": "True track over ground in degrees (0-359)"
    },
    "baro_rate": {
      "@id": "adsb:baroRate",
      "@comment": "Rate of change of barometric altitude in ft/min"
    },
    "squawk": {
      "@id": "adsb:squawk",
      "@comment": "Mode A squawk code as 4-digit octal string"
    },
    "emergency": {
      "@id": "adsb:emergency",
      "@comment": "Emergency status declaration"
    },
    "category": {
      "@id": "adsb:emitterCategory",
      "@comment": "Emitter category indicating aircraft type"
    },
    "mil": {
      "@id": "adsb:military",
      "@type": "xsd:boolean",
      "@comment": "True if aircraft is military"
    },
    "seen_pos": {
      "@id": "adsb:seenPosition",
      "@comment": "Seconds since last position was received"
    },
    "messages": {
      "@id": "adsb:messageCount",
      "@comment": "Total number of Mode S messages received"
    },
    "rssi": {
      "@id": "adsb:signalStrength",
      "@comment": "Signal power in dBFS"
    },
    "type": {
      "@id": "adsb:dataSourceType",
      "@comment": "Data source type: adsb_icao, mlat, tisb_icao, etc."
    },
    "now": {
      "@id": "adsb:responseTimestamp",
      "@type": "xsd:long",
      "@comment": "Milliseconds since Unix epoch"
    },
    "total": {
      "@id": "adsb:totalAircraft",
      "@type": "xsd:integer"
    },
    "ctime": {
      "@id": "adsb:cacheTime",
      "@type": "xsd:long"
    },
    "ptime": {
      "@id": "adsb:processingTime",
      "@type": "xsd:long",
      "@comment": "Server processing time in milliseconds"
    },
    "ac": {
      "@id": "adsb:aircraftList",
      "@container": "@set"
    },
    "AircraftCollectionResponse": "adsb:AircraftCollectionResponse",
    "AircraftSingleResponse": "adsb:AircraftSingleResponse",
    "OperationsResponse": "adsb:OperationsResponse",
    "TraceResponse": "adsb:TraceResponse"
  }
}