| Code Figure | Meaning |
|---|---|
| 0 | Analysis Interpolated on Forecast Grid |
| 1 | Analysis with Forecast Interpolated on Analysis Grid |
| 2 | Analysis Interpolated on a Common Grid with the Forecast but Different to Original Grid |
| 3 | Gridded Observation on Forecast Grid |
| 4 | Gridded Observation wih Forecast Interpolated on Observation Grid |
| 5-191 | Reserved |
| 192-254 |
Reserved for Local Use |
| 255 | Missing |