When you setup your Pelican web-app, you will enter the zip code or postal code for your location. The Pelican Solution uses that information to know where the site the devices are installed are located. Pelican sends the outdoor air saturation (humidity) and barometric pressure levels to the individual devices that need to use this information to calculate their outdoor enthalpy level.
This configuration can also be found and changed in the Pelican Web-App > Admin > Site Settings > Location.