| Value | Category | Cases | |
|---|---|---|---|
| 1 | Mud/earth | 1596 | 
                                    
                                    40.7%
                                 | 
| 2 | Wood | 2 | 
                                    
                                    0.1%
                                 | 
| 3 | Tiles | 82 | 
                                    
                                    2.1%
                                 | 
| 4 | Cement/concrete | 2225 | 
                                    
                                    56.7%
                                 | 
| 5 | Other | 16 | 
                                    
                                    0.4%
                                 | 
| Sysmiss | 5 |