Name	Notation	Description	Types	Status
Parent site	0		Concept	stable
Observation site	1		Concept	stable
Balloon manufacture date	2		Concept	stable
Balloon launch point	3		Concept	stable
Surface observation	4		Concept	stable
Surface observation displacement from launch point	5		Concept	stable
Flight level observation	6		Concept	stable
Flight level termination point	7		Concept	stable
IFR ceiling and visibility	8		Concept	stable
Mountain obscuration	9		Concept	stable
Strong surface wind	10		Concept	stable
Freezing level	11		Concept	stable
Multiple freezing level	12		Concept	stable
Instrument manufacture date	13		Concept	stable
Missing value	31		Concept	stable