What is every Big 12 Conference team's record against the over/under line as a home underdog since the 2004 season?

Definitions
Team Over Record Over % Under % Total +/-
Oklahoma 1-0-0 100.0% 0.0% +10.5
Oklahoma St 17-8-0 68.0% 32.0% +5.8
Nebraska 12-6-0 66.7% 33.3% +6.0
W Virginia 12-7-0 63.2% 36.8% +8.9
Texas A&M 15-10-0 60.0% 40.0% +4.6
Texas Tech 17-13-1 56.7% 43.3% +4.1
Iowa State 27-23-1 54.0% 46.0% +1.4
Colorado 27-23-0 54.0% 46.0% -0.6
Kansas 31-28-1 52.5% 47.5% -0.4
Missouri 11-10-0 52.4% 47.6% -2.6
TX Christian 7-7-0 50.0% 50.0% -0.2
Baylor 16-18-0 47.1% 52.9% -1.4
Kansas St 16-23-0 41.0% 59.0% -0.5
Texas 5-10-1 33.3% 66.7% +0.1