| Value | Category | Cases | |
|---|---|---|---|
| 1 | AC | 40 |
62.5%
|
| 2 | DC | 16 |
25%
|
| 3 | Portable | 0 |
0%
|
| 888 | Don?t know | 8 |
12.5%
|
| Sysmiss | 217 |