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

Definitions
Team Over Record Over % Under % Total +/-
Penn State 3-1-0 75.0% 25.0% +11.0
Michigan St 3-1-0 75.0% 25.0% -0.5
Indiana 4-2-0 66.7% 33.3% +4.0
Illinois 5-4-0 55.6% 44.4% +6.3
Purdue 6-5-0 54.5% 45.5% +2.0
Wisconsin 1-1-0 50.0% 50.0% +3.0
Iowa 2-2-0 50.0% 50.0% -3.4
Minnesota 3-4-0 42.9% 57.1% -8.0
Nebraska 1-2-0 33.3% 66.7% -4.8
Northwestern 1-4-0 20.0% 80.0% -9.5
Michigan 1-4-0 20.0% 80.0% +1.0