| Value | Category | Cases | |
|---|---|---|---|
| 1 | Clean | 441 | 
                                                                 
                                    
                                    48.4%
                                 
                                                             | 
                                                        
                    
| 2 | Fairly clean | 429 | 
                                                                 
                                    
                                    47%
                                 
                                                             | 
                                                        
                    
| 3 | Not Clean | 42 | 
                                                                 
                                    
                                    4.6%
                                 
                                                             |