First CO2 measurement often unreliable
When powering the sensor on after being moved to a new room with substantially different CO2 concentration, the first measurement is often highly unreliable, e.g. showing 600 ppm and a minute later 1200 ppm. I would suspect this is due to the SCD30's response time, reaching 63% of the final value after 20s, in combination with the default measurement interval of 60s.
This is unproblematic, if the sensor stays in the same place and runs continuosly, though.