| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Cubic meters | 43 |
49.4%
|
| 2 | Gallons | 43 |
49.4%
|
| 3 | Cubic feet | 1 |
1.1%
|
| 4 | Other | 0 |
0%
|
| 5 | Liters | 0 |
0%
|
| Sysmiss | 27 |