| Value | Category | Cases | |
|---|---|---|---|
| 11 | Earth, sand, soil | 197 |
20.8%
|
| 12 | Dung | 0 |
0%
|
| 21 | Wood planks | 515 |
54.3%
|
| 32 | Concrete, vinyl or asphalt strips | 129 |
13.6%
|
| 34 | Cement | 101 |
10.6%
|
| 96 | Other | 7 |
0.7%
|
| 99 | Missing | 0 |
0%
|
| Sysmiss | 51 |