| Value | Category | Cases | |
|---|---|---|---|
| 1 | Earth/mud | 4463 |
96%
|
| 2 | Wood/Planks | 25 |
0.5%
|
| 3 | Stone/Brick | 12 |
0.3%
|
| 4 | Cement | 147 |
3.2%
|
| 5 | Other | 2 |
0%
|
| Sysmiss | 74 |