Name	Notation	Description	Types	Status
Vertical sounding significance	1		Concept	stable
Vertical significance (surface observations)	2		Concept	stable
Vertical significance (satellite observations)	3		Concept	stable
Phase of aircraft flight	4		Concept	stable
Meteorological attribute significance	5		Concept	stable
Ozone vertical sounding significance	6		Concept	stable
Dimensional significance	7		Concept	stable
Radiation vertical sounding significance	8		Concept	stable
Detailed phase of flight	9		Concept	stable
Surface qualifier (for temperature data)	10		Concept	stable
Meteorological feature	11		Concept	stable
Land/sea qualifier	12		Concept	stable
Day/night qualifier	13		Concept	stable
Qualifier for runway visual range	14		Concept	stable
Significant qualifier for sensor	15		Concept	stable
Change qualifier of a trend-type forecast or an aerodrome forecast	16		Concept	stable
Qualifier of the time when the forecast change is expected	17		Concept	stable
SEAWINDS land/ice surface type	18		Concept	stable
Qualifier for following centre identifier	19		Concept	stable
Total number of missing entities (with respect to accumulation or average)	20		Concept	stable
Time significance	21		Concept	stable
Total number (with respect to accumulation or average)	22		Concept	stable
First-order statistics	23		Concept	stable
Difference statistics	24		Concept	stable
Time difference qualifier	25		Concept	stable
Matrix significance	26		Concept	stable
Surface type	29		Concept	stable
Manual on Codes (Volume I.1, Section C) Code table from which data are derived	30		Concept	stable
Data category - CREX table A	31		Concept	stable
Status of operation	32		Concept	stable
Method of derivation of percentage confidence	33		Concept	stable
Type of monitoring exercise	35		Concept	stable
Type of centre or station performing monitoring	36		Concept	stable
Time significance (Aviation forecast)	39		Concept	stable
Flight level significance	40		Concept	stable
Data significance	41		Concept	stable
Extended vertical sounding significance	42		Concept	stable
Atmospheric chemical or physical constituent type	43		Concept	stable
CAS registry number	44		Concept	stable
Atmospheric chemical or physical constituent type	46		Concept	stable
Number of observations	49		Concept	stable
Qualifier for number of missing values in calculation of statistic	50		Concept	stable
Qualifier for number of missing values in calculation of statistic	51		Concept	stable
Condition for which number of days of occurrence follows	52		Concept	stable
Day of occurrence qualifier	53		Concept	stable
Qualifier for wind speed or wind gusts	54		Concept	stable
Sample scanning mode significance	60		Concept	stable
Sun-glint indicator	65		Concept	stable
Semi-transparency indicator	66		Concept	stable
TOVS/ATOVS product qualifier	70		Concept	stable
Pixel(s) type	72		Concept	stable
Altimeter echo type	74		Concept	stable
Ascending/descending orbit qualifier	75		Concept	stable
Type of band	76		Concept	stable
Radiometer sensed surface type	77		Concept	stable
Product status	79		Concept	stable
Qualifier for GTSPP quality flag	80		Concept	stable
Type of equipment	81		Concept	stable
Modification of sensor height to another value	82		Concept	stable
Nominal value indicator	83		Concept	stable
Beam identifier	85		Concept	stable
Vertical significance for NWP	86		Concept	stable
Decimal scale of following significands	90		Concept	stable