Hi @chris_bernhardt, thank you for providing detailed info.
For the CO2 reading, you can place both of your air monitors (Go and ONE) outside, exposed to fresh air, and then perform a manual CO2 calibration for both monitors. Please see this article for more details: Carbon Dioxide (CO2) Sensor Calibration Guide | AirGradient Knowledge Base and discussion on this thread can also be helpful for you: Differences between uncalibrated sources - #2 by Tai_AirGradient
For the temperature and humidity readings, the offset is in development. We will update as soon as we have it ready.
Regarding the difference in PM2.5 numbers displayed on the e-ink display of the monitor VS the AirGradient Dashboard/mobile app, I have observed this with my AirGradient Go and consulted our engineer. This can be caused by differences in the reported time.
The AirGradient Dashboard/AirGradient Map mobile app updates the reading every 60 seconds (the reading you see on the Dashboard/mobile app is the latest reading that the AirGradient Go posts to our server, not an average value.
The E-paper display on the AirGradient Go has an update interval as fast as 3 seconds (the measurement interval can be set in the AirGradient Go’s settings).