| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Cubic meters | 136 |
88.9%
|
| 2 | Gallons | 0 |
0%
|
| 3 | Cubic feet | 0 |
0%
|
| 4 | Other | 12 |
7.8%
|
| 5 | Liters | 5 |
3.3%
|
| Sysmiss | 93 |