| Code figure | Meaning |
| 0 | Average |
| 1 | Accumulation |
| 2 | Maximum |
| 3 | Minimum |
| 4 | Difference (value at the end of time range minus value at the beginning) |
| 5 | Root mean square |
| 6 | Standard deviation |
| 7 | Covariance (temporal variance) |
| 8 | Difference (value at the start of time range minus value at the end) |
| 9 | Ratio |
| 10-191 | Reserved |
| 192-254 | Reserved for local use |
| 255 | Missing |