| Value | Category | Cases | |
|---|---|---|---|
| 1 | Always available | 814 |
65.9%
|
| 2 | Available most of the time | 297 |
24%
|
| 3 | Sometimes unavailable | 100 |
8.1%
|
| 4 | Often unavailable | 24 |
1.9%
|
| Sysmiss | 8 |