| Value | Category | Cases | |
|---|---|---|---|
| 0 | no net | 6970 |
47.6%
|
| 1 | only treated nets | 7505 |
51.3%
|
| 2 | both treated and untreated nets | 0 |
0%
|
| 3 | only untreated nets | 159 |
1.1%
|