What is every Big Ten Conference team's record against the over/under line as an underdog in the 2006 season?

Definitions
Team Over Record Over % Under % Total +/-
Michigan 2-0-0 100.0% 0.0% +29.3
Indiana 5-2-1 71.4% 28.6% +9.5
Minnesota 3-2-0 60.0% 40.0% +3.1
Iowa 2-2-0 50.0% 50.0% -0.8
Michigan St 2-3-0 40.0% 60.0% 0.0
Northwestern 3-5-0 37.5% 62.5% +0.2
Penn St 2-4-0 33.3% 66.7% -7.4
Purdue 3-6-0 33.3% 66.7% -9.4
Illinois 1-5-0 16.7% 83.3% -10.8
Ohio St 0-1-0 0.0% 100.0% -16.5
Wisconsin 0-2-0 0.0% 100.0% -10.0