| Value | Category | 
                                    
                    
                        | 1 | cardboard/plastic/canvas | 
                                    
                    
                        | 2 | reeds/sticks/grass | 
                                    
                    
                        | 3 | stones/mud bricks | 
                                    
                    
                        | 4 | metal/asbestos | 
                                    
                    
                        | 5 | wood | 
                                    
                    
                        | 6 | cut stone/concrete/bricks | 
                            
            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.