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

Definitions
Team Over Record Over % Under % Total +/-
Penn St 1-0-0 100.0% 0.0% +1.0
Michigan 1-0-0 100.0% 0.0% +8.5
Purdue 5-1-0 83.3% 16.7% +17.0
Indiana 2-1-0 66.7% 33.3% +11.0
Northwestern 2-1-0 66.7% 33.3% -4.7
Maryland 2-1-0 66.7% 33.3% 0.0
Minnesota 2-1-0 66.7% 33.3% +2.2
Nebraska 1-2-0 33.3% 66.7% +1.3
Rutgers 0-3-0 0.0% 100.0% -9.3
Illinois 0-3-0 0.0% 100.0% -21.2