What is every Southwest Division team's record against the over/under line as an underdog since the 2006-2007 season?

Definitions
Team Over Record Over % Under % Total +/-
San Antonio 281-253-11 52.6% 47.4% +0.4
Dallas 315-318-7 49.8% 50.2% +0.8
Memphis 410-416-6 49.6% 50.4% 0.0
Houston 312-334-6 48.3% 51.7% +1.0
New Orleans 386-433-12 47.1% 52.9% 0.0