| Value | Category | Cases | |
|---|---|---|---|
| 1 | flat | 4951 | 
                                                                 
                                    
                                    44.1%
                                 
                                                             | 
                                                        
                    
| 2 | slight slope | 4075 | 
                                                                 
                                    
                                    36.3%
                                 
                                                             | 
                                                        
                    
| 3 | moderate slope | 1503 | 
                                                                 
                                    
                                    13.4%
                                 
                                                             | 
                                                        
                    
| 4 | steep/hilly | 691 | 
                                                                 
                                    
                                    6.2%
                                 
                                                             | 
                                                        
                    
| 5 | other | 9 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             |