| Value | Category | 
                                    
                    
                        | 1 | Bio Science Only | 
                                    
                    
                        | 2 | Physical Science Only | 
                                    
                    
                        | 3 | Bio & Physical Science both | 
                                    
                    
                        | 4 | No Science Subjects | 
                            
            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.