Hi Nico
Yes, all measurements are indoors.
The test was not affected by other factors because pressure differences were used.
Also, the pressure from home forced air handlers are measured in IWC, inches of water. atmospheric pressure is measured in inches of mercury. Big difference. Assuming your air handler has a return duct, the net interior pressure is a fraction of a inch of water. This is insignificant when compared to the pressure from 20 to 30 inches of mercury.
No correction needs to be made in the study to compensate for indoor/outdoor temperature differences.
Nico, I’m curious if you own and operate a personal weather station that reports to NWS through CWOP?
Thanks,
James
DW4536