| Value | Category | Cases | |
|---|---|---|---|
| 1 | Mud/earth | 1596 |
40.7%
|
| 2 | Wood | 2 |
0.1%
|
| 3 | Tiles | 82 |
2.1%
|
| 4 | Cement/concrete | 2225 |
56.7%
|
| 5 | Other | 16 |
0.4%
|
| Sysmiss | 5 |