| Value | Category | Cases | |
|---|---|---|---|
| -9 | Missing | 0 |
0%
|
| -8 | Uncodeabel | 0 |
0%
|
| -7 | N/a | 0 |
0%
|
| 0 | No fertiliser applied at that time | 24 |
12.6%
|
| 1 | Amount decreased since then | 49 |
25.8%
|
| 2 | Amount unchanged | 59 |
31.1%
|
| 3 | Amount increased since then | 58 |
30.5%
|
| Sysmiss | 4803 |