| Value | Category | 
                                    
                    
                        | 1 | Grass/thatch/mud | 
                                    
                    
                        | 2 | Iron sheets | 
                                    
                    
                        | 3 | Tiles | 
                                    
                    
                        | 4 | Concrete | 
                                    
                    
                        | 5 | Asbestos | 
                                    
                    
                        | 10 | NATURAL | 
                                    
                    
                        | 20 | RUDIMENTARY | 
                                    
                    
                        | 30 | FINISHED | 
                                    
                    
                        | 96 | OTHER | 
                                    
                    
                        | 97 | Not dejure resident | 
                            
            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.