| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | No net | 210 |
35.6%
|
| 1 | Only treated nets | 249 |
42.2%
|
| 2 | Both treated and untreated nets | 0 |
0%
|
| 3 | Only untreated nets | 131 |
22.2%
|
| Sysmiss | 284 |