| Value | Category | Cases | |
|---|---|---|---|
| -4 | 27 | 
                                    
                                    3.6%
                                 | |
| 0 | 77 | 
                                    
                                    10.4%
                                 | |
| 1 | 17 | 
                                    
                                    2.3%
                                 | |
| 2 | 622 | 
                                    
                                    83.7%
                                 |