| Value | Category | Cases | |
|---|---|---|---|
| -77 | Other, specify | 0 |
0%
|
| 1 | Grass | 20 |
34.5%
|
| 2 | Iron sheets | 38 |
65.5%
|
| 3 | Clay tiles | 0 |
0%
|
| 4 | Concrete | 0 |
0%
|
| 5 | Plastic sheeting | 0 |
0%
|
| Sysmiss | 582 |