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["Min. gpa","Max. gpa","Letter","# Occurences"]
[0,"Less than 0.7","F",0]
[0.7,"Less than & 1.15","D",0]
[1.1499999999999999,"Less than 1.5","D+",1]
[1.5,"Less than 1.85","C-",2]
[1.85,"Less than 2.15","C",0]
[2.15,"Less than 2.5","C+",0]
[2.5,"Less than 2.85","B-",5]
[2.85,"Less than 3.15","B",20]
[3.15,"Less than 3.5","B+",7]
[3.5,"Less than 3.85","A-",9]
[3.85,"Less than 4.15","A",3]
[4.1500000000000004,"Less than 4.3","A+",1]