| Value | Category | Cases | |
|---|---|---|---|
| 1 | Grass | 1781 |
44.9%
|
| 2 | Iron sheets | 1942 |
48.9%
|
| 3 | Clay tiles | 21 |
0.5%
|
| 4 | Concrete | 3 |
0.1%
|
| 5 | Plastic sheet | 14 |
0.4%
|
| 6 | Asbestos sheet | 54 |
1.4%
|
| 7 | Other (specify) | 154 |
3.9%
|
| Sysmiss | 7 |