| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Mechanical treatment | 6 | 7 |
0.2%
|
| 2 | Chemical treatment | 1 | 1 |
0%
|
| 3 | Biological treatment | 10 | 13 |
0.4%
|
| Sysmiss | 718 | 3250 |