| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0-2km | 75 | 
                                                                 
                                    
                                    50%
                                 
                                                             | 
                                                        
                    
| 2 | 2-10km | 75 | 
                                                                 
                                    
                                    50%
                                 
                                                             | 
                                                        
                    
| 3 | No stratum | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             |