| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't Know (Spontaneous) | 2 |
4.7%
|
| 1 | Standard for total energy use | 19 |
44.2%
|
| 2 | Standard for energy use relative to output | 11 |
25.6%
|
| 3 | Standard for energy use relative to other parameters | 11 |
25.6%
|
| Sysmiss | 386 |