| Value | Category | Cases | |
|---|---|---|---|
| 1 | concrete | 13 |
0.8%
|
| 2 | wood | 7 |
0.4%
|
| 3 | matal plates | 1543 |
95.9%
|
| 4 | roof tiles/shingles | 13 |
0.8%
|
| 5 | asbestos | 1 |
0.1%
|
| 6 | foliage/plam leaves/grass/bamboo | 32 |
2%
|
| 7 | other | 0 |
0%
|