| Value | Category | Cases | |
|---|---|---|---|
| 1 | light - this includes sandy soils that are easy to | 3 |
12.5%
|
| 2 | medium - this includes loamy soils that are moderately | 15 |
62.5%
|
| 3 | heavy - this includes clayey soils that are hard | 6 |
25%
|
| Sysmiss | 1 |