| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | no net | 92 |
82.9%
|
| 1 | only treated nets | 17 |
15.3%
|
| 2 | both treated and untreated nets | 0 |
0%
|
| 3 | only untreated nets | 2 |
1.8%
|
| Sysmiss | 1857 |