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

Definitions
Team Over Record Over % Under % Total +/-
Texas Tech 2-0-0 100.0% 0.0% +4.0
Oklahoma 5-1-1 83.3% 16.7% +10.4
Baylor 3-1-0 75.0% 25.0% +9.6
Oklahoma St 3-1-0 75.0% 25.0% +5.6
W Virginia 3-2-0 60.0% 40.0% -1.9
Iowa St 2-2-1 50.0% 50.0% +7.1
Kansas St 1-2-0 33.3% 66.7% -3.3
TX Christian 1-3-0 25.0% 75.0% -14.0
Texas 1-3-0 25.0% 75.0% -10.5
Kansas 0-1-0 0.0% 100.0% -8.0