Notation	Name	Description	Status
001	Horizontal visibility		stable
002	Vertical visibility		stable
003	Present weather		stable
004	Past weather (1)		stable
005	Past weather (2)		stable
006	Flight rules		stable
008	Cloud distribution for aviation		stable
009	General weather indicator (TAF/METAR)		stable
010	Cloud cover (total)		stable
011	Cloud amount		stable
012	Cloud type		stable
013	Height of base of cloud		stable
014	Height of top of cloud		stable
015	Pressure at base of cloud		stable
016	Pressure at top of cloud		stable
017	Cloud top description		stable
018	Tendency of runway visual range		stable
019	Significant present or forecast weather		stable
020	Significant recent weather phenomena		stable
021	Type of precipitation		stable
022	Character of precipitation		stable
023	Other weather phenomena		stable
024	Intensity of phenomena		stable
025	Obscuration		stable
026	Character of obscuration		stable
027	Phenomena occurrence		stable
028	Expected change in intensity		stable
029	Rain flag		stable
031	Ice deposit (thickness)		stable
032	Rate of ice accretion (estimated)		stable
033	Cause of ice accretion		stable
034	Sea ice concentration		stable
035	Amount and type of ice		stable
036	Ice situation		stable
037	Ice development		stable
038	Bearing of ice edge		stable
039	Ice distance		stable
040	Evolution of drift snow		stable
041	Airframe icing		stable
042	Airframe icing present		stable
043	Peak liquid water content		stable
044	Average liquid water content		stable
045	Supercooled large droplet (SLD) conditions		stable
048	Evolution of feature		stable
050	Cloud index		stable
051	Amount of low clouds		stable
052	Amount of middle clouds		stable
053	Amount of high clouds		stable
054	True direction from which a phenomenon or clouds are moving or in which they are observed		stable
055	State of sky in the tropics		stable
056	Cloud phase		stable
058	Visibility seawards from a coastal station		stable
059	Minimum horizontal visibility		stable
060	Prevailing horizontal visibility		stable
061	Runway visual range (RVR)		stable
062	State of the ground (with or without snow)		stable
063	Special phenomena		stable
065	Snow cover		stable
066	Maximum diameter of hailstones		stable
067	Diameter of deposit		stable
070	Minimum number of atmospherics		stable
071	Accuracy of fix and rate of atmospherics		stable
081	Cloud amount in segment		stable
082	Amount segment cloud free		stable
083	Amount of segment covered by scene		stable
085	General condition of runway		stable
086	Runway deposits		stable
087	Runway contamination		stable
088	Depth of runway deposits		stable
089	Runway friction coefficient		stable
090	Special clouds		stable
091	Vertical visibility		stable
092	Height of base of cloud		stable
093	Height of inversion		stable
095	Ice probability		stable
096	Ice age (``A`` parameter)		stable
101	Locust (acridian) name		stable
102	Locust (maturity) colour		stable
103	Stage of development of locusts		stable
104	Organization state of swarm or band of locusts		stable
105	Size of swarm or band of locusts and duration of passage of swarm		stable
106	Locust population density		stable
107	Direction of movements of locust swarm		stable
108	Extent of vegetation		stable
111	x-axis error ellipse major component		stable
112	y-axis error ellipse minor component		stable
113	z-axis error ellipse component		stable
114	Angle of x-axis in error ellipse		stable
115	Angle of z-axis in error ellipse		stable
116	Emission height of cloud stroke		stable
117	Amplitude of lightning strike		stable
118	Lightning detection error		stable
119	Lightning discharge polarity		stable
121	Threshold value for polarity decision		stable
122	Threshold value for polarity decision		stable
123	Minimum threshold for detection		stable
124	Lightning stroke or flash		stable
126	Lightning rate of discharge		stable
127	Lightning - distance from station		stable
128	Lightning - direction from station		stable
130	Cloud hydrometeor concentration		stable
131	Effective radius of cloud hydrometeors		stable
132	Cloud liquid water content		stable
133	Hydrometeor radius		stable
135	Ice mass (on a rod)		stable
136	Supplementary cloud type		stable
137	Evolution of clouds		stable