| Value | Category | Cases | |
|---|---|---|---|
| 1 | NORMAL | 1125 | 
                                                                 
                                    
                                    84.6%
                                 
                                                             | 
                                                        
                    
| 2 | DIFFICULT | 205 | 
                                                                 
                                    
                                    15.4%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 8703 |