| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 | 
                                    
                                    0%
                                 | 
| 1 | Cubic meters | 1119 | 
                                    
                                    94.1%
                                 | 
| 2 | Gallons | 0 | 
                                    
                                    0%
                                 | 
| 3 | Cubic feet | 0 | 
                                    
                                    0%
                                 | 
| 4 | Other | 4 | 
                                    
                                    0.3%
                                 | 
| 5 | Liters | 66 | 
                                    
                                    5.6%
                                 | 
| Sysmiss | 227 |