What is every Big Ten Conference team's record against the over/under line as a road underdog since the 2017-2018 season?

Definitions
Team Over Record Over % Under % Total +/-
Michigan 28-18-0 60.9% 39.1% +0.5
Michigan St 15-11-0 57.7% 42.3% +2.0
Nebraska 42-33-0 56.0% 44.0% +2.1
Iowa 31-25-0 55.4% 44.6% +2.2
Ohio St 23-23-0 50.0% 50.0% -0.7
Wisconsin 26-27-0 49.1% 50.9% +1.1
Penn St 31-33-1 48.4% 51.6% -0.4
Northwestern 31-33-2 48.4% 51.6% +0.7
Rutgers 31-34-0 47.7% 52.3% +1.2
Illinois 21-24-0 46.7% 53.3% -1.1
Indiana 26-30-3 46.4% 53.6% -1.7
Minnesota 32-38-2 45.7% 54.3% +0.6
Maryland 27-34-0 44.3% 55.7% -4.0
Purdue 11-17-0 39.3% 60.7% -2.4