| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | no net | 5212 |
29.5%
|
| 1 | only treated nets | 12165 |
68.9%
|
| 2 | both treated and untreated nets | 0 |
0%
|
| 3 | only untreated nets | 282 |
1.6%
|