| Value | Category | Cases | |
|---|---|---|---|
| 1 | Sand | 209 |
1.7%
|
| 2 | Smoothed mud | 8941 |
72.9%
|
| 3 | Smooth cement | 3088 |
25.2%
|
| 4 | Wood | 1 |
0%
|
| 5 | Tile | 21 |
0.2%
|
| 6 | Other (Specify) | 10 |
0.1%
|
| Sysmiss | 1 |