What is every Big Ten Conference team's record against the over/under line as a home underdog since the 2014 season?

Definitions
Team Over Record Over % Under % Total +/-
Ohio State 1-0-0 100.0% 0.0% +48.5
Wisconsin 1-0-0 100.0% 0.0% +7.0
Michigan 4-1-0 80.0% 20.0% +7.4
Indiana 14-5-0 73.7% 26.3% +3.5
Purdue 17-8-0 68.0% 32.0% +7.7
Minnesota 10-5-0 66.7% 33.3% +6.7
Nebraska 7-4-0 63.6% 36.4% +4.8
Penn State 4-3-1 57.1% 42.9% -1.4
Maryland 10-8-0 55.6% 44.4% +5.6
Michigan St 5-6-0 45.5% 54.5% -6.0
Northwestern 7-10-1 41.2% 58.8% -4.0
Illinois 11-16-0 40.7% 59.3% -2.6
Rutgers 12-18-0 40.0% 60.0% -4.9
Iowa 3-6-0 33.3% 66.7% -5.4