| Value | Category | Cases | |
|---|---|---|---|
| 1 | light - this includes sandy soils that are easy to | 120 |
35.6%
|
| 2 | medium - this includes loamy soils that are moderately | 184 |
54.6%
|
| 3 | heavy - this includes clayey soils that are hard | 33 |
9.8%
|
| Sysmiss | 194 |