What is every Big 12 Conference team's record against the over/under line as a favorite in the 2018 season?

Definitions
Team Over Record Over % Under % Total +/-
Oklahoma 10-2-1 83.3% 16.7% +12.9
Baylor 4-1-0 80.0% 20.0% +8.1
Oklahoma St 5-3-0 62.5% 37.5% +2.6
W Virginia 6-4-0 60.0% 40.0% +1.3
Texas Tech 2-2-0 50.0% 50.0% -6.1
Texas 4-5-0 44.4% 55.6% -3.7
Iowa St 2-3-1 40.0% 60.0% +3.2
Kansas St 1-2-0 33.3% 66.7% -3.3
TX Christian 2-7-0 22.2% 77.8% -11.6
Kansas 0-1-0 0.0% 100.0% -8.0