Since almost all of the USCRN stations now have over five years of data,
correlating the
Tmax and Tmin against the data from the various classes of «selected» stations in this report should be the obvious first step in identifying siting issues.
But whatever the measurement error is, the way I treat processing Tmin and
Tmax, I have half the error they have because Tmin and
Tmax are not
correlated, so Tavg as 2 errors, and Tmin day1 is
correlated to Tmin day 2.