| Value | Category | Cases | |
|---|---|---|---|
| -9 | 10 | 
                                    
                                    5.8%
                                 | |
| 1 | 3 | 
                                    
                                    1.8%
                                 | |
| 2 | 6 | 
                                    
                                    3.5%
                                 | |
| 3 | 126 | 
                                    
                                    73.7%
                                 | |
| 4 | 26 | 
                                    
                                    15.2%
                                 | |
| Sysmiss | 44 |