| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | No net | 1 |
33.3%
|
| 1 | Only treated nets | 1 |
33.3%
|
| 2 | Both treated and untreated nets | 0 |
0%
|
| 3 | Only untreated nets | 1 |
33.3%
|
| Sysmiss | 5326 |