Here's a interesting one - my WS-1400-IP is correct during the day, but when it cools off
at night it reads about 1.5-2.0 degrees too low according to both my outdoor thermometer, and surrounding stations.
Calibration is set to 0 for now, but setting it to something else will affect one or the other, so i'll have a correct nighttime temp but a wrong daytime temp...
Do you guys have a suggestion for corrections at night, vs day?