| Value | Category | Cases | |
|---|---|---|---|
| 1 | light - this includes sandy soils that are easy to | 8 |
7.2%
|
| 2 | medium - this includes loamy soils that are moderately | 91 |
82%
|
| 3 | heavy - this includes clayey soils that are hard | 12 |
10.8%
|
| Sysmiss | 20 |