I put my gauges on my 06 Durango. It's 87 degrees outside so according to the temperature pressure chart assuming the 85 degree pressure group, the low side should be 45-55 psi and the high side should be 225-250 psi. My gauges are reading 35-39 psi on low and 225-250 on high. It fluctuates a little for these two pressures over a 15 minute period. My inside vent temp on right side of vehicle is around 48-50. The left side vent is 58-60. Any ideas??

 

Maybe a bit low.