| Value | Category | Cases | |
|---|---|---|---|
| 1 | Nitrate | 40 |
25.6%
|
| 2 | Phosphate | 27 |
17.3%
|
| 3 | Potash | 12 |
7.7%
|
| 4 | Mixed | 77 |
49.4%
|
| Sysmiss | 7394 |