| Value | Category | Cases | |
|---|---|---|---|
| 1 | AC | 71 |
68.3%
|
| 2 | DC | 19 |
18.3%
|
| 3 | Portable | 2 |
1.9%
|
| 888 | Don?t know | 12 |
11.5%
|
| Sysmiss | 177 |