| Value | Category | Cases | |
|---|---|---|---|
| 1 | Sand | 22 |
1.8%
|
| 2 | Smoothed mud | 500 |
40.6%
|
| 3 | Smooth cement | 674 |
54.7%
|
| 4 | Tile | 32 |
2.6%
|
| 5 | Other (Specify) | 5 |
0.4%
|
| Sysmiss | 1 |