| Value | Category | 
                                    
                    
                        | 1 | Gram | 
                                    
                    
                        | 2 | Kilogram | 
                                    
                    
                        | 8 | Liter | 
                                    
                    
                        | 9 | Milliliter | 
                                    
                    
                        | 10 | Bucket | 
                                    
                    
                        | 11 | Wheelbarrow | 
                                    
                    
                        | 12 | Ox cart | 
                                    
                    
                        | 13 | Other (Specify) | 
                                    
                    
                        | Sysmiss |  | 
                            
            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.