...
| Level | |||
|---|---|---|---|
| Type of first fixed surface | 1 | ground or water surface | |
| Scale factor of first fixed surface | 0 | all bits to 1 | missing |
| Scaled value of first fixed surface | 0 | all bits to 1 | missing |
| Type of second fixed surface | all bits to 1 | missing | |
| Scale factor of second fixed surface | all bits to 1 | missing | |
| Scaled value of second fixed surface | all bits to 1 | missing | |
...