A school records the number of books read by students in a month. Here are the records:
Student 1: 5 books
Student 2: 8 books
Student 3: 7 books
Student 4: 4 books
Student 5: 6 books
Compare the total number of books read by Student 1 and Student 2 against the total number of books read by Student 3 and Student 4. Which group of students read more books?