| Value | Category | Cases | |
|---|---|---|---|
| 1 | Clean | 1070 |
49.1%
|
| 2 | Dirty | 939 |
43.1%
|
| 3 | Dusty | 144 |
6.6%
|
| 4 | Could not observe | 28 |
1.3%
|
| Sysmiss | 67 |