What is every Big Ten Conference team's record against the over/under line as a road underdog since the 2004 season?

Definitions
Team Over Record Over % Under % Total +/-
Indiana 49-29-1 62.8% 37.2% +5.2
Wisconsin 14-11-0 56.0% 44.0% +2.3
Nebraska 28-22-0 56.0% 44.0% +4.5
Michigan 17-17-0 50.0% 50.0% +1.0
Maryland 38-39-1 49.4% 50.7% +0.5
Minnesota 33-34-2 49.3% 50.8% -1.0
Illinois 34-39-2 46.6% 53.4% +1.4
Purdue 31-36-2 46.3% 53.7% -1.2
Penn St 16-19-0 45.7% 54.3% -2.2
Michigan St 23-29-0 44.2% 55.8% -0.2
Rutgers 33-44-0 42.9% 57.1% +1.7
Ohio St 5-7-0 41.7% 58.3% -1.0
Northwestern 29-42-2 40.9% 59.2% +0.2
Iowa 18-32-0 36.0% 64.0% -5.1