| Value | Category | Cases | |
|---|---|---|---|
| 1 | Grass | 772 |
16%
|
| 2 | Iron sheets | 3546 |
73.4%
|
| 3 | Clay tiles | 60 |
1.2%
|
| 4 | Concrete | 72 |
1.5%
|
| 5 | Plastic sheeting | 50 |
1%
|
| 6 | Abestos sheet | 153 |
3.2%
|
| 7 | Other (specify) | 179 |
3.7%
|
| Sysmiss | 36 |