| Value | Category | Cases | |
|---|---|---|---|
| 0 | Äusserst schwierig | 330 | 
                                                                 
                                    
                                    16.2%
                                 
                                                             | 
                                                        
                    
| 1 | 126 | 
                                                                 
                                    
                                    6.2%
                                 
                                                             | 
                                                        
                    |
| 2 | 157 | 
                                                                 
                                    
                                    7.7%
                                 
                                                             | 
                                                        
                    |
| 3 | 116 | 
                                                                 
                                    
                                    5.7%
                                 
                                                             | 
                                                        
                    |
| 4 | 58 | 
                                                                 
                                    
                                    2.8%
                                 
                                                             | 
                                                        
                    |
| 5 | 107 | 
                                                                 
                                    
                                    5.2%
                                 
                                                             | 
                                                        
                    |
| 6 | 39 | 
                                                                 
                                    
                                    1.9%
                                 
                                                             | 
                                                        
                    |
| 7 | 45 | 
                                                                 
                                    
                                    2.2%
                                 
                                                             | 
                                                        
                    |
| 8 | 52 | 
                                                                 
                                    
                                    2.5%
                                 
                                                             | 
                                                        
                    |
| 9 | 24 | 
                                                                 
                                    
                                    1.2%
                                 
                                                             | 
                                                        
                    |
| 10 | Äusserst leicht | 24 | 
                                                                 
                                    
                                    1.2%
                                 
                                                             | 
                                                        
                    
| 66 | Filter | 943 | 
                                                                 
                                    
                                    46.2%
                                 
                                                             | 
                                                        
                    
| 88 | Weiss nicht | 19 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             |