| Value | Category | Cases | |
|---|---|---|---|
| -77 | Other, specify | 0 |
0%
|
| 1 | Sand | 0 |
0%
|
| 2 | Smooth mud | 61 |
83.6%
|
| 3 | Smooth cement | 12 |
16.4%
|
| 4 | Wood | 0 |
0%
|
| 5 | Tile | 0 |
0%
|
| Sysmiss | 567 |