| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | no net | 5676 |
79.8%
|
| 1 | only treated nets | 916 |
12.9%
|
| 2 | both treated and untreated nets | 4 |
0.1%
|
| 3 | only untreated nets | 516 |
7.3%
|
| Sysmiss | 8602 |