| Value | Category | Cases | |
|---|---|---|---|
| 0 | No fertiliser applied at that time | 445 |
66.9%
|
| 1 | Amount decreased since then | 73 |
11%
|
| 2 | Amount unchanged | 44 |
6.6%
|
| 3 | Amount increased since then | 103 |
15.5%
|
| Sysmiss | 4328 |