| Value | Category | Cases | |
|---|---|---|---|
| 1 | Cement | 6451 |
85.7%
|
| 2 | Metal | 11 |
0.1%
|
| 3 | Wood | 757 |
10.1%
|
| 4 | Mat | 39 |
0.5%
|
| 5 | Straw | 228 |
3%
|
| 6 | Cartoon | 4 |
0.1%
|
| 7 | other | 32 |
0.4%
|
| 8 | None | 6 |
0.1%
|