| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't Know (Spontaneous) | 13 |
7%
|
| 1 | Standard for total energy use | 135 |
73%
|
| 2 | Standard for energy use relative to output | 35 |
18.9%
|
| 3 | Standard for energy use relative to other parameters | 2 |
1.1%
|
| Sysmiss | 396 |