| Value | Category | Cases | |
|---|---|---|---|
| -77 | Other, specify | 0 |
0%
|
| 1 | Sand | 1 |
0.2%
|
| 2 | Smooth mud | 526 |
82.3%
|
| 3 | Smooth cement | 112 |
17.5%
|
| 4 | Wood | 0 |
0%
|
| 5 | Tile | 0 |
0%
|
| Sysmiss | 1 |