| Value | Category | Cases | |
|---|---|---|---|
| -9 | Another type | 0 |
0%
|
| -8 | Don't you know | 0 |
0%
|
| -7 | Prefers not to disclose | 0 |
0%
|
| 1 | Sandy | 203 |
18.3%
|
| 2 | Lemons | 245 |
22.1%
|
| 3 | Clayey | 661 |
59.6%
|
| Sysmiss | 1529 |