| Value | Category | Cases | |
|---|---|---|---|
| 1 | high | 1508 |
32.1%
|
| 2 | normal | 1779 |
37.9%
|
| 3 | low | 1046 |
22.3%
|
| 4 | none, not in operation | 365 |
7.8%
|
| Sysmiss | 5411 |