| Value | Category | Cases | |
|---|---|---|---|
| 1 | Earth/Mud | 6776 |
77.2%
|
| 2 | Wood | 33 |
0.4%
|
| 3 | Stone/Brick | 29 |
0.3%
|
| 4 | Cement/Concrete/Tiles | 1934 |
22%
|
| 11 | .A | 11 | |
| Sysmiss | 20 |