What is every Big 12 Conference team's record against the over/under line as an underdog since the 2012 season?

Definitions
Team Over Record Over % Under % Total +/-
Oklahoma 11-5-1 68.8% 31.3% +5.9
Houston 31-19-1 62.0% 38.0% +3.2
TX Christian 29-21-0 58.0% 42.0% +3.1
Texas Tech 46-34-1 57.5% 42.5% +3.4
Kansas 59-55-1 51.8% 48.3% +1.3
UCF 19-19-1 50.0% 50.0% +2.9
Kansas St 33-35-1 48.5% 51.5% +0.5
W Virginia 29-32-2 47.5% 52.5% +0.8
BYU 25-30-0 45.5% 54.6% -0.9
Iowa St 34-46-1 42.5% 57.5% -1.1
Oklahoma St 21-29-0 42.0% 58.0% -0.3
Baylor 25-37-0 40.3% 59.7% -0.9
Cincinnati 19-32-0 37.3% 62.8% -3.4
Texas 18-36-0 33.3% 66.7% -3.8