What is every Big 12 Conference team's record against the over/under line in post-season bowl games since the 2017 season?

Definitions
Team Over Record Over % Under % Total +/-
Texas Tech 1-0-0 100.0% 0.0% +6.0
Oklahoma 2-1-0 66.7% 33.3% +18.0
TX Christian 1-1-0 50.0% 50.0% +2.8
Baylor 1-1-0 50.0% 50.0% +11.2
Texas 0-3-0 0.0% 100.0% -10.2
W Virginia 0-2-0 0.0% 100.0% -13.8
Iowa State 0-3-0 0.0% 100.0% -13.7
Kansas St 0-2-0 0.0% 100.0% -11.2
Oklahoma St 0-3-0 0.0% 100.0% -7.0