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