| Value | Category | Cases | |
|---|---|---|---|
| 1 | AC | 82 |
57.7%
|
| 2 | DC | 19 |
13.4%
|
| 3 | Portable | 31 |
21.8%
|
| 888 | Don?t know | 10 |
7%
|
| Sysmiss | 139 |