| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 47 | 
                                    
                                    65.3%
                                 | 
| 1 | Yes | 22 | 
                                    
                                    30.6%
                                 | 
| 9 | 3 | 
                                    
                                    4.2%
                                 | |
| -9 | 31 | ||
| -7 | 30 |