A/C Pressure Test/Diagnosing in cold ambient temps

[EMT with a Yaris]

Question is:
If the ambient temperature (car parked outside since I don't have a big enough garage to work in) is between 35-40 f (around 0-4c) what pressure should the car be having?

Service Manual states:
When the refrigerant volume is correct, the
gauge reading indicates as follows:
Low pressure side:
0.15 to 0.25 MPa (1.5 to 2.5 kgf/cm2)
High pressure side:
1.37 to 1.57 MPa (14 to 16 kgf/cm2)
HINT:
Pressure varies in accordance with certain
conditions (outside air temperature, sunlight
and wind).