| Value | Category | Cases | |
|---|---|---|---|
| 1 | higher r | 5 |
5.2%
|
| 2 | contam. | 4 |
4.2%
|
| 3 | contam. | 32 |
33.3%
|
| 4 | unqual. | 19 |
19.8%
|
| 5 | work in | 17 |
17.7%
|
| 6 | salt eva | 11 |
11.5%
|
| 7 | other | 8 |
8.3%
|
| 8 | do not i | 0 |
0%
|
| Sysmiss | 39 |