...
| Level | |||
|---|---|---|---|
| Type of first fixed surface | 1 | 151 | soil level**ground or water surface |
| Scale factor of first fixed surface | all bits to 1 | 1/2/3/4 | n-th soil levelmissing |
| Scaled value of first fixed surface | all bits to 1 | missing | |
| Type of second fixed surface | 151 | all bits to 1 | missingsoil level** |
| Scale factor of second fixed surface | 0 | all bits to 1 | missing |
| Scaled value of second fixed surface | 1/2/3/4 | all bits to 1 | missingn-th soil level |
**newly approved by WMO (release in May 2016)