What is every Southwest Division team's record against the over/under line as an underdog in the 2012-2013 season?

Definitions
Team Over Record Over % Under % Total +/-
Dallas 24-17-2 58.5% 41.5% +3.9
San Antonio 11-9-0 55.0% 45.0% +3.3
Houston 20-17-0 54.1% 46.0% +3.6
New Orleans 32-34-0 48.5% 51.5% +0.7
Memphis 11-13-0 45.8% 54.2% -1.6