If your in a srt6, there is still more left. If your in a N/A crossfire those are great times. The elevation, temps, humidity have alot to do with your times. Especially when the other track is 3000' lower. Some of these tracks will actually correct to a slower time. Your temps were perfect, and the pressure was really low. Usually mine is around 30 or a high 29, and humidity even when there is almost none is still aroudn 15%, so you had great conditions, just horrible elevation.