Constraint Name	METARs	TAFs	Aircraft Reports	AIRSIGMETs	STATION INFO
Time Constraints [Required when supported]	Hours Before Now	YES	YES	YES	YES	NO
	StartTime, EndTime	YES	YES	YES	YES	NO
Station Constraints [Optional]	Station String	YES	YES	NO	NO	YES
	Most Recent For Each Station	YES	YES	NO	NO	NO
Most Recent Constraints [Optional]	Most Recent	YES	YES	YES	YES	NO
Geographic Area Constraints [Optional]	Lon/lat rect	YES	YES	YES	YES	YES
	Lon/lat point and radius	YES	YES	YES	NO	YES
	Flight Path	YES	YES	YES	YES	YES
Density [Optional]	minDegreeDistance	YES	YES	YES	NO	YES
Fields [Optional]	Fields	YES	NO	NO	NO	YES