| Value | Category | Cases | |
|---|---|---|---|
| -9 | 1 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| -7 | 31 | 
                                                                 
                                    
                                    14.8%
                                 
                                                             | 
                                                        
                    |
| 1 | 20 | 
                                                                 
                                    
                                    9.6%
                                 
                                                             | 
                                                        
                    |
| 2 | 157 | 
                                                                 
                                    
                                    75.1%
                                 
                                                             |