| Value | Category | Cases | |
|---|---|---|---|
| 0 | no net | 11890 |
29.4%
|
| 1 | only treated nets | 25211 |
62.4%
|
| 2 | both treated and untreated nets | 22 |
0.1%
|
| 3 | only untreated nets | 3271 |
8.1%
|