| Value | Category | Cases | |
|---|---|---|---|
| 1 | Sand/dirt/straw | 496 |
10.3%
|
| 2 | Smoothed mud | 1036 |
21.5%
|
| 3 | Smooth cement | 3167 |
65.6%
|
| 4 | Wood | 51 |
1.1%
|
| 5 | Tile | 65 |
1.3%
|
| 6 | Other (specify) | 14 |
0.3%
|
| Sysmiss | 39 |