| Value | Category | Cases | |
|---|---|---|---|
| 0 | No fertiliser applied at that time | 156 |
62.9%
|
| 1 | Amount decreased since then | 30 |
12.1%
|
| 2 | Amount unchanged | 12 |
4.8%
|
| 3 | Amount increased since then | 50 |
20.2%
|
| Sysmiss | 4745 |