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

Definitions
Team Over Record Over % Under % Total +/-
LA Chargers 5-1-0 83.3% 16.7% +5.8
Denver 2-1-0 66.7% 33.3% +3.7
Kansas City 3-4-1 42.9% 57.1% -2.8
Las Vegas 2-5-0 28.6% 71.4% -1.5