What is every Big Ten Conference team's record against the over/under line in post-season bowl games since the 2015 season?

Definitions
Team Over Record Over % Under % Total +/-
Purdue 4-0-0 100.0% 0.0% +17.3
Nebraska 2-0-0 100.0% 0.0% +3.0
Penn St 6-2-0 75.0% 25.0% +9.6
Michigan 6-3-0 66.7% 33.3% +5.7
Northwestern 3-3-0 50.0% 50.0% -2.8
Ohio St 5-5-0 50.0% 50.0% -3.6
Rutgers 1-1-0 50.0% 50.0% -0.5
Iowa 4-4-0 50.0% 50.0% +1.4
Illinois 1-1-0 50.0% 50.0% -5.0
Maryland 2-2-0 50.0% 50.0% +2.5
Wisconsin 4-5-0 44.4% 55.6% +0.1
Minnesota 3-4-0 42.9% 57.1% -9.4
Indiana 1-3-0 25.0% 75.0% -5.8
Michigan St 1-4-0 20.0% 80.0% -6.6