| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 29 | 
                                                                 
                                    
                                    82.9%
                                 
                                                             | 
                                                        
                    
| 1 | yes | 4 | 
                                                                 
                                    
                                    11.4%
                                 
                                                             | 
                                                        
                    
| 9 | 2 | 
                                                                 
                                    
                                    5.7%
                                 
                                                             | 
                                                        
                    |
| 11 | .Z | 18719 |