| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | No net | 810 |
25.7%
|
| 1 | Only treated nets | 1483 |
47.1%
|
| 2 | Both treated and untreated nets | 2 |
0.1%
|
| 3 | Only untreated nets | 854 |
27.1%
|