Describe the bug

I always un-check "Use International Standard Atmosphere" and enter the actual Temperature and Barometric Pressure for the Launch Site.

For example. I will be launching model rockets today with my granddaughters at the local Elementary School.

These are the raw Atmospheric conditions for the site at 13:00 local time reported by Wunderground:

Pad Altitude: 741 ft
Temperature: 75F
Air Pressure: 30.05 inHg

I calculate the absolute pressure from Wunderground's reported: 30.05 inHg at 741 ft = 990.66 mB so I entered 75F and 990.66 mB in the Atmospheric Conditions dialog:

Then I run my Sims.

I was curious about air density -vs- altitude so I exported the following data from the sim:

1. Time
2. Altitude
3. Air temperature
4. Air pressure
5. Air density

An Excel file of the exported data set is attached

riptide-air-density-etc.xlsx

The Air Temperature and Pressure do not match my overrides so the Air Density -vs- Altitude is off by about 2%:

For 75F and 990.66 mB I expected air density around 1.1619 Kg/m^3

But the Temperature in the exported Data was 73.3F and the Air Pressure was 976.72 Kg/m^3 in the export file.

Running 73.3F and 976.72 mB thru an air density calculator does come up with about the same air density on the pad ( 1.1491 Kg/m^3 ) so it is not a conversion issue ...

Am I doing it wrong ?

Thanks !

-- kjh

To Reproduce

1. Set up Sim with Custom Atmospheric Conditions
2. Run Sim
3. Air Pressure, Temperature, Density do not match Custom Conditions

...

Screenshots / .ork file

Screenshot(s):

.ork file:

estes-riptide.ork.zip

OpenRocket version

24.12

What platform are you running on?

Linux

Additional context

No response