| Value | Category | Cases | |
|---|---|---|---|
| 1 | AC | 96 |
63.6%
|
| 2 | DC | 28 |
18.5%
|
| 3 | Portable | 17 |
11.3%
|
| 888 | Don?t know | 10 |
6.6%
|
| Sysmiss | 130 |