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

Definitions
Team Over Record Over % Under % Total +/-
Michigan 6-0-0 100.0% 0.0% +11.0
Ohio St 1-0-0 100.0% 0.0% +48.0
Purdue 19-8-2 70.4% 29.6% +8.5
Indiana 18-10-0 64.3% 35.7% +1.3
Minnesota 12-7-0 63.2% 36.8% +5.3
Maryland 14-9-0 60.9% 39.1% +6.2
Northwestern 13-11-0 54.2% 45.8% -0.9
Rutgers 20-18-0 52.6% 47.4% -0.8
Michigan St 11-10-0 52.4% 47.6% -2.6
Nebraska 10-10-1 50.0% 50.0% -0.3
Wisconsin 1-1-0 50.0% 50.0% -3.8
Illinois 11-17-2 39.3% 60.7% -3.6
Penn St 2-5-1 28.6% 71.4% -3.7
Iowa 2-7-0 22.2% 77.8% -6.5