| Value | Category | Cases | |
|---|---|---|---|
| 0 | No fertiliser applied at that time | 985 |
95%
|
| 1 | Amount decreased since then | 24 |
2.3%
|
| 2 | Amount unchanged | 16 |
1.5%
|
| 3 | Amount increased since then | 12 |
1.2%
|
| Sysmiss | 3956 |