| Value | Category | Cases | |
|---|---|---|---|
| 1 | Concrete | 323 |
87.3%
|
| 2 | Logs | 18 |
4.9%
|
| 3 | None | 2 |
0.5%
|
| 4 | Plastic | 20 |
5.4%
|
| 5 | Wood | 7 |
1.9%
|
| Missing value | 10 |