| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | From electricity invoice | 828 | 136216 |
24.8%
|
| 2 | Estimation by remembering invoice items | 2335 | 376009 |
68.5%
|
| 3 | Household record | 194 | 26454 |
4.8%
|
| 4 | Others | 34 | 5888 |
1.1%
|
| Sysmiss | 30 | 4210 |