| Value | Category | Cases | |
|---|---|---|---|
| 1 | Nitrate | 13 |
11.4%
|
| 2 | Phosphate | 22 |
19.3%
|
| 3 | Potash | 4 |
3.5%
|
| 4 | Mixed | 75 |
65.8%
|
| Sysmiss | 9784 |