| Value | Category | Cases | |
|---|---|---|---|
| -4 | 87 | 
                                    
                                    11.7%
                                 | |
| 0 | 71 | 
                                    
                                    9.6%
                                 | |
| 1 | 14 | 
                                    
                                    1.9%
                                 | |
| 2 | 571 | 
                                    
                                    76.9%
                                 |