| Value | Category | 
                                    
                    
                        | 1 | More than M 104 | 
                                    
                    
                        | 2 | Exactly M 104 | 
                                    
                    
                        | 3 | Less than M 104 | 
                                    
                    
                        | 4 | impossible to tell from the information given | 
                                    
                    
                        | 98 | don't know | 
                            
            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.