What is every Big 12 Conference team's record against the over/under line as a home underdog since the 2003 season?

Definitions
Team Over Record Over % Under % Total +/-
Oklahoma 1-0-0 100.0% 0.0% +10.5
Oklahoma St 19-8-0 70.4% 29.6% +6.5
Nebraska 12-6-0 66.7% 33.3% +6.0
Texas Tech 19-13-1 59.4% 40.6% +4.3
Texas A&M 16-12-0 57.1% 42.9% +4.1
W Virginia 12-9-0 57.1% 42.9% +6.7
Missouri 13-11-0 54.2% 45.8% -1.5
Iowa State 29-25-2 53.7% 46.3% +1.3
Colorado 28-25-0 52.8% 47.2% -1.0
Kansas 31-30-1 50.8% 49.2% -0.9
TX Christian 7-7-0 50.0% 50.0% -0.2
Baylor 19-20-0 48.7% 51.3% -1.2
Kansas St 16-23-0 41.0% 59.0% -0.5
Texas 5-10-1 33.3% 66.7% +0.1