| Value | Category | Cases | |
|---|---|---|---|
| -9 | Another type | 0 |
0%
|
| -8 | Don't you know | 0 |
0%
|
| -7 | Prefers not to disclose | 0 |
0%
|
| 1 | Sandy | 500 |
21.8%
|
| 2 | Lemons | 468 |
20.4%
|
| 3 | Clayey | 1321 |
57.7%
|
| Sysmiss | 349 |