| Value | Category | Cases | |
|---|---|---|---|
| 1 | Nitrate | 18 |
15.7%
|
| 2 | Phosphate | 22 |
19.1%
|
| 3 | Potash | 7 |
6.1%
|
| 4 | Mixed | 68 |
59.1%
|
| Sysmiss | 7672 |