Those are not good numbers -- low side should be less than half that number at 75F, and high side should be much higher.
You didn't indicate humidity, so a general chart may not be that accurate -vs. one that also includes RH in the calculation.
At 75F my general chart indicates 35-45psi LOW, and 150-170psi HIGH -- these are approximations. With accurate RH in the picture, the values will change somewhat.