| Value | Category | Cases | |
|---|---|---|---|
| 1 | AC | 4 |
44.4%
|
| 2 | DC | 1 |
11.1%
|
| 3 | Portable | 0 |
0%
|
| 888 | Don?t know | 4 |
44.4%
|
| Sysmiss | 272 |