What is every Big Ten Conference team's record against the over/under line as an underdog in the 2015 season?

Definitions
Team Over Record Over % Under % Total +/-
Purdue 7-4-0 63.6% 36.4% +7.0
Northwestern 5-3-0 62.5% 37.5% -5.8
Nebraska 3-2-0 60.0% 40.0% +3.6
Indiana 3-2-0 60.0% 40.0% +7.0
Maryland 5-4-0 55.6% 44.4% +3.5
Michigan 1-1-0 50.0% 50.0% +2.5
Wisconsin 1-1-0 50.0% 50.0% +0.8
Minnesota 3-3-0 50.0% 50.0% +1.7
Penn St 2-2-0 50.0% 50.0% +5.9
Rutgers 3-4-0 42.9% 57.1% +2.9
Iowa 1-2-0 33.3% 66.7% -14.0
Michigan St 1-2-0 33.3% 66.7% -6.8
Illinois 2-6-0 25.0% 75.0% -7.9