| Value | Category | Cases | |
|---|---|---|---|
| 1 | Good | 161 |
17.9%
|
| 2 | Usable | 490 |
54.4%
|
| 3 | Poor | 249 |
27.7%
|
| 8 | Other | 0 |
0%
|
| Sysmiss | 250 |