Field Definitions are Available Here
Collection
varstring(20)
Mandatory if applicable
Units in which altitudes are recorded.
meters
AltitudeDatumName, AltitudeEncodingMethod, AltitudeResolution
meters
Must be used with AltitudeDatumName, AltitudeEncodingMethod, AltitudeResolution.
METADATA > COLLECTIONMETADATA > Spatial > CoordinateSystemContainer > VerticalCoordinateSystemContainer > AltitudeSystemDefinition.AltitudeDistanceUnits
None.
Spatial Information