| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. GRASS | 645 | 
                                    
                                    14.1%
                                 | 
| 2 | 2. IRON SHEETS | 3521 | 
                                    
                                    76.7%
                                 | 
| 3 | 3. CLAY TILES | 37 | 
                                    
                                    0.8%
                                 | 
| 4 | 4. CONCRETE | 40 | 
                                    
                                    0.9%
                                 | 
| 5 | 5. PLASTIC SHEETING | 29 | 
                                    
                                    0.6%
                                 | 
| 6 | 6. ASBESTOS SHEET | 260 | 
                                    
                                    5.7%
                                 | 
| 7 | 7. OTHER (SPECIFY) | 57 | 
                                    
                                    1.2%
                                 | 
| Sysmiss | 22 |