| Value | Category | 
                                    
                    
                        | 1 | Iron Sheets | 
                                    
                    
                        | 2 | Tiles | 
                                    
                    
                        | 3 | Concrete | 
                                    
                    
                        | 4 | Asbestos | 
                                    
                    
                        | 5 | Grass/leaves. | 
                                    
                    
                        | 6 | Grass & mud.. | 
                                    
                    
                        | 8 | Other (Specify) | 
                            
            Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.