| Code figure |
Description |
Unit |
Status |
| 0-19 |
Reserved |
|
Operational |
| 20 |
Temperature |
K |
Operational |
| 21-99 |
Reserved |
|
Operational |
| 100 |
Pressure |
Pa |
Operational |
| 101 |
Pressure deviation from mean sea level |
Pa |
Operational |
| 102 |
Altitude above mean sea level |
m |
Operational |
| 103 |
Height above ground |
m |
Operational |
| 104 |
Sigma coordinate |
|
Operational |
| 105 |
Hybrid coordinate |
|
Operational |
| 106 |
Depth below land surface |
m |
Operational |
| 107 |
Potential temperature (theta) |
K |
Operational |
| 108 |
Pressure deviation from ground to level |
Pa |
Operational |
| 109 |
Potential vorticity |
K m-2 kg-1 s-1 |
Operational |
| 110 |
Geometrical height |
m |
Operational |
| 111 |
Eta coordinate |
|
Operational |
| 112 |
Geopotential height |
gpm |
Operational |
| 113 |
Logarithmic hybrid coordinate |
|
Operational |
| 114-159 |
Reserved |
|
Operational |
| 160 |
Depth below sea level |
m |
Operational |
| 161-191 |
Reserved |
|
Operational |
| 192-254 |
Reserved for local use |
|
Operational |
| 255 |
Missing |
|
Operational |