| Value | Category | Cases | |
|---|---|---|---|
| 1 | Nitrate | 10 |
5.8%
|
| 2 | Phosphate | 5 |
2.9%
|
| 3 | Potash | 8 |
4.7%
|
| 4 | Mixed | 148 |
86.5%
|
| Sysmiss | 5713 |