| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 1 | Earth | 856 | 
                                    
                                    35.7%
                                 | 
| 2 | Gravel | 184 | 
                                    
                                    7.7%
                                 | 
| 3 | Stone | 8 | 
                                    
                                    0.3%
                                 | 
| 4 | Muram | 16 | 
                                    
                                    0.7%
                                 | 
| 5 | Paved/ Tarred | 1288 | 
                                    
                                    53.7%
                                 | 
| 6 | Concrete | 48 | 
                                    
                                    2%
                                 |