| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 10 | natural | 0 |
0%
|
| 11 | sand | 139 |
2.4%
|
| 12 | dirt | 3974 |
69%
|
| 20 | rudimentary | 0 |
0%
|
| 30 | finished | 0 |
0%
|
| 32 | vinyl | 6 |
0.1%
|
| 33 | tile | 41 |
0.7%
|
| 34 | cement | 1571 |
27.3%
|
| 35 | carpet | 8 |
0.1%
|
| 96 | other | 20 |
0.3%
|
| Sysmiss | 194 |