| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | No net | 1113 |
38.6%
|
| 1 | Only treated nets | 1217 |
42.2%
|
| 2 | Both treated and untreated nets | 3 |
0.1%
|
| 3 | Only untreated nets | 554 |
19.2%
|
| Sysmiss | 8610 |