| Value | Category | Cases | |
|---|---|---|---|
| 1 | Sand/dirt/straw | 820 |
20.7%
|
| 2 | Smoothed mud | 2868 |
72.2%
|
| 3 | Smooth cement | 253 |
6.4%
|
| 4 | Wood | 27 |
0.7%
|
| 5 | Tile | 1 |
0%
|
| 6 | Other (specify) | 1 |
0%
|
| Sysmiss | 6 |