| Value | Category | Cases | |
|---|---|---|---|
| 1 | AC | 10 |
45.5%
|
| 2 | DC | 7 |
31.8%
|
| 3 | Portable | 1 |
4.5%
|
| 888 | Don?t know | 4 |
18.2%
|
| Sysmiss | 259 |