Dear all,

I am currently working on a project located at Saudi Arabia in Jeddah.

I found 2 different weather data files for this same location, the first
in the weather data folder of the 'ecotect' software and the second on
the EnergyPlus website that I converted into .wea to use in the 'weather
tool'. Both files display very different results in psychrometry, wind
analysis, solar position...

Where does this discrepancy come from?

Could you please suggest which one is more exact?

Regards,

Zeina Alwan