| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not contaminated at all | 10 |
47.6%
|
| 2 | Somewhat contaminated | 9 |
42.9%
|
| 3 | Very contaminated | 2 |
9.5%
|
| 8 | Unsure/Don't Know | 0 |
0%
|
| Sysmiss | 393 |