| Value | Category | Cases | |
|---|---|---|---|
| 1 | SAND | 50 | 
                                                                 
                                    
                                    2.5%
                                 
                                                             | 
                                                        
                    
| 2 | SMOOTHED MUD | 1239 | 
                                                                 
                                    
                                    62.3%
                                 
                                                             | 
                                                        
                    
| 3 | SMOOTH CEMENT | 692 | 
                                                                 
                                    
                                    34.8%
                                 
                                                             | 
                                                        
                    
| 4 | WOOD | 1 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| 5 | TILE | 7 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    
| 6 | OTHER (SPECIFY) | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 1 |