| Value | Category | Cases | |
|---|---|---|---|
| -4 | 465 | 
                                    
                                    62.6%
                                 | |
| 0 | 50 | 
                                    
                                    6.7%
                                 | |
| 1 | 10 | 
                                    
                                    1.3%
                                 | |
| 2 | 218 | 
                                    
                                    29.3%
                                 |