| Value | Category | Cases | |
|---|---|---|---|
| 1 | Always avaliable | 977 |
56.6%
|
| 2 | Most avaliable | 312 |
18.1%
|
| 3 | Sometimes not avaliable | 377 |
21.8%
|
| 4 | Often not avalible | 60 |
3.5%
|
| Sysmiss | 127 |