| Value | Category | Cases | |
|---|---|---|---|
| 0 | Skip | 14 |
50%
|
| 1 | Fresh water | 10 |
35.7%
|
| 2 | Brackish water | 3 |
10.7%
|
| 3 | Other | 1 |
3.6%
|
| Sysmiss | 29901 |