| Value | Category | Cases | |
|---|---|---|---|
| 1 | AC | 76 |
72.4%
|
| 2 | DC | 12 |
11.4%
|
| 3 | Portable | 7 |
6.7%
|
| 888 | Don?t know | 10 |
9.5%
|
| Sysmiss | 176 |