What is every Big Ten Conference team's record against the over/under line as a road underdog since the 2012 season?

Definitions
Team Over Record Over % Under % Total +/-
Indiana 25-19-0 56.8% 43.2% +3.6
Wisconsin 6-5-0 54.6% 45.5% +1.2
Nebraska 18-16-0 52.9% 47.1% +3.3
Penn St 11-10-0 52.4% 47.6% +1.5
Illinois 25-24-2 51.0% 49.0% +2.4
Michigan 9-9-0 50.0% 50.0% -2.2
Ohio St 2-2-0 50.0% 50.0% +3.3
Maryland 21-23-0 47.7% 52.3% +0.7
Minnesota 17-20-2 46.0% 54.1% -1.5
Northwestern 18-22-2 45.0% 55.0% -0.3
Purdue 17-24-1 41.5% 58.5% -2.8
Iowa 12-17-0 41.4% 58.6% -2.9
Michigan St 12-20-0 37.5% 62.5% -2.7
Rutgers 18-33-0 35.3% 64.7% -0.9