| Value | Category | 
                                    
                    
                        | 1 | no waste visible | 
                                    
                    
                        | 2 | waste visible, but protected | 
                                    
                    
                        | 3 | waste visible, not protected | 
                                    
                    
                        | 8 | waste site not inspected | 
                            
            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.