What is every Big Ten Conference team's record against the over/under line as an underdog since the 2013 season?

Definitions
Team Over Record Over % Under % Total +/-
Ohio St 8-2-0 80.0% 20.0% +12.0
Michigan 16-9-0 64.0% 36.0% +3.9
Indiana 43-31-0 58.1% 41.9% +1.6
Purdue 44-37-3 54.3% 45.7% +2.8
Maryland 37-33-0 52.9% 47.1% +2.4
Nebraska 30-27-1 52.6% 47.4% +1.7
Penn St 17-16-1 51.5% 48.5% +3.1
Minnesota 32-31-1 50.8% 49.2% -0.2
Michigan St 26-29-0 47.3% 52.7% -1.7
Northwestern 33-40-3 45.2% 54.8% -2.3
Illinois 37-49-4 43.0% 57.0% -0.2
Wisconsin 8-11-1 42.1% 57.9% -0.8
Rutgers 37-53-0 41.1% 58.9% -1.2
Iowa 19-28-0 40.4% 59.6% -3.2