What is every AFC West Division team's record against the over/under line as a home underdog in the 2012 season?

Definitions
Team Over Record Over % Under % Total +/-
Denver 1-0-0 100.0% 0.0% +13.0
Kansas City 3-4-0 42.9% 57.1% -3.6
Las Vegas 1-3-0 25.0% 75.0% +2.3
LA Chargers 0-1-0 0.0% 100.0% -18.0