| Value | Category | Cases | |
|---|---|---|---|
| 1 | high | 33 |
12.8%
|
| 2 | average | 55 |
21.4%
|
| 3 | low | 115 |
44.7%
|
| 4 | none: not in operation | 54 |
21%
|
| Sysmiss | 1525 |