| Value | Category | Cases | |
|---|---|---|---|
| 1 | grass or leaves | 68 |
24.6%
|
| 2 | grass + plastic sheets | 28 |
10.1%
|
| 3 | grass + iron sheet | 5 |
1.8%
|
| 4 | iron sheets or tiles | 175 |
63.4%
|
| 8 | Uknown | 0 |
0%
|
| 9 | Missing | 1 |