| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | no net | 8474 |
80%
|
| 1 | only treated nets | 1382 |
13.1%
|
| 2 | both treated and untreated nets | 5 |
0%
|
| 3 | only untreated nets | 726 |
6.9%
|
| Sysmiss | 29206 |