| Value | Category | Cases | |
|---|---|---|---|
| 1 | AC | 98 |
71%
|
| 2 | DC | 29 |
21%
|
| 3 | Portable | 2 |
1.4%
|
| 888 | Don?t know | 9 |
6.5%
|
| Sysmiss | 143 |