| Value | Category | Cases | |
|---|---|---|---|
| -4 | 9 | 
                                    
                                    1.2%
                                 | |
| 0 | 31 | 
                                    
                                    4.2%
                                 | |
| 1 | 16 | 
                                    
                                    2.2%
                                 | |
| 2 | 687 | 
                                    
                                    92.5%
                                 |