| Value | Category | 
                                    
                    
                        | 1 | Pure stand | 
                                    
                    
                        | 2 | Strip Intercrop | 
                                    
                    
                        | 3 | Row Intercrop | 
                                    
                    
                        | 4 | Relay Intercrop | 
                                    
                    
                        | 5 | Mixed stand | 
                                    
                    
                        | 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.