| Value | Category | Cases | |
|---|---|---|---|
| 1 | light - this includes sandy soils that are easy to | 13 |
12.9%
|
| 2 | medium - this includes loamy soils that are moderately | 48 |
47.5%
|
| 3 | heavy - this includes clayey soils that are hard | 40 |
39.6%
|
| Sysmiss | 48 |