Name	Notation	Description	Types	Status
Height of station	1		Concept	stable
Height or altitude	2		Concept	stable
Geopotential	3		Concept	stable
Pressure	4		Concept	stable
Height increment	5		Concept	stable
Height above station	6		Concept	stable
Height	7		Concept	stable
Geopotential	8		Concept	stable
Geopotential height	9		Concept	stable
Flight level	10		Concept	stable
Grid point altitude	12		Concept	stable
Elevation	21		Concept	stable
Solar elevation	22		Concept	stable
Satellite zenith angle	24		Concept	stable
Solar zenith angle	25		Concept	stable
Satellite zenith angle	26		Concept	stable
Height of station ground above mean sea level	30		Concept	stable
Height of barometer above mean sea level	31		Concept	stable
Height of sensor above local ground (or deck of marine platform)	32		Concept	stable
Height of sensor above water surface	33		Concept	stable
Maximum size of z-dimension	35		Concept	stable
Level index of z	36		Concept	stable
Impact parameter	40		Concept	stable
Depth below land surface	61		Concept	stable
Depth below sea/water surface	62		Concept	stable
Depth below sea/water surface (cm)	63		Concept	stable
Representative height of sensor above station	64		Concept	stable
Water pressure	65		Concept	stable
Drogue depth	70		Concept	stable