20.0   1.0 A  
  7.2   2.5 B
 16.0   4.0  
 18.0   5.0  
 19.0   6.0  
 20.0   7.0  
 22.0   8.0  
 23.0   9.0  
 26.0  10.0  
 32.0  15.0 C 
 33.0  15.5 D