| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 153 |
54.8%
|
| 2 | Mains | 7 |
2.5%
|
| 3 | Generator | 86 |
30.8%
|
| 4 | Battery (car) | 1 |
0.4%
|
| 5 | Solar | 19 |
6.8%
|
| 9 | Other | 13 |
4.7%
|
| Sysmiss | 124 |