Am Freitag, 9. August 2019 07:35:46 UTC+2 schrieb Michi Kaa:
>
> Where is the Barometer located? Indoor? Since temperature and humidity 
> influence measurement of pressure, it is possible that the measurement is 
> just wrong just because you are opening a window for ventilating the house 
> or when the barometer sensor is hit by direct sunlight during the day and 
> is warmed up.
>

The fact this happens repeatedly more or less the same time during the day 
lets me think its sunlight. How was weather on Aug 3 in Belchertown? 
Overcast?

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