What is every Big Ten Conference team's record against the over/under line as an underdog since the 2018 season?

Definitions
Team Over Record Over % Under % Total +/-
Ohio St 5-1-0 83.3% 16.7% +12.8
Michigan 8-2-0 80.0% 20.0% +7.4
Indiana 27-16-0 62.8% 37.2% +2.1
Purdue 20-15-2 57.1% 42.9% +3.2
Minnesota 16-15-0 51.6% 48.4% +1.7
Northwestern 21-24-2 46.7% 53.3% -2.8
Maryland 16-19-0 45.7% 54.3% +0.4
Wisconsin 4-5-0 44.4% 55.6% +1.6
Illinois 18-24-3 42.9% 57.1% -0.2
Nebraska 14-20-0 41.2% 58.8% -2.9
Rutgers 21-30-0 41.2% 58.8% -1.3
Iowa 10-15-0 40.0% 60.0% -1.4
Michigan St 15-23-0 39.5% 60.5% -2.4
Penn St 3-10-1 23.1% 76.9% -6.4