Field Definitions are Available Here
Collection
longfloat(var)
Mandatory if applicable
The longitude of a point of the G-Ring.
-180
ExclusionGRingFlag, GRingPointLatitude, GRingPointSequenceNo
-180
Must be used with ExclusionGRingFlag, GRingPointLatitude, and GRingPointSequenceNo.
METADATA > COLLECTIONMETADATA > Spatial > SpatialDomainContainer > HorizontalSpatialDomainContainer > GPolygon > GPolygonContainer > GRingPoint.GRingPointLongitude
ref. SMAP/EPSG:4283 European petroleum survey group geodetic parameters
Spatial Information