| Value | Category | 
                                    
                    
                        | 1 | Wage per day per individual laborer (wage rate) | 
                                    
                    
                        | 2 | Total sum paid to all individual laborers (all days and and laborers combined) | 
                                    
                    
                        | 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.