| Value | Category | Cases | |
|---|---|---|---|
| 1 | Iron sheets | 52 |
18.4%
|
| 2 | Plastic bags | 7 |
2.5%
|
| 3 | Wood | 23 |
8.1%
|
| 4 | Concrete | 50 |
17.7%
|
| 5 | Mud | 1 |
0.4%
|
| 6 | Glass | 0 |
0%
|
| 7 | Cardboard | 1 |
0.4%
|
| 8 | Open (no walls) | 118 |
41.7%
|
| 9 | Other (Specify) | 31 |
11%
|
| Sysmiss | 909 |