Calculating Reported Pressure
Before calculating reported pressure, enter the altitude, and then click the Options button and then click Calc Reported Press to open the Calculate Reported Pressure dialog box.
Enter the absolute pressure reading from an accurate on-site instrument, such as a Mercury barometer or equivalent.
Click the Calculate button to calculate and display reported pressure without returning to the trace window. Click the Apply button to calculate reported pressure and return to the trace window with the calculated value in the Pressure parameter.