I have a new A3 from the latest Indiegogo run. I am only in my second day of getting to know my new device, but already now I can tell that the temperature readings are off by about 4-6 celsius depending on the real temperature. Is there any way to correct this or might it be too difficult to give it a acceptable correction due to different seasons, here the real temperature outside can vary from summer +30 to winter -30 so my bet is that during winter the correction needs to be less, but this is only my thought.
For example, this morning was around 5-6 celsius while A3 reported a minimum of 11 celsius. The device is mounted outside but away from sun, wind and rain.
It seems to be a much bigger difference when it is colder. Here is a quickly pasted together comparison to a nearby (1km) weather station, the last week of October. Higher temperature being the A3.
I looked up a warmer day in September.
16th September 02:00 Weather station reports +11.2c while the A3 reports +14.1c.
At 16:00 the same day Weather station reports +13.1c while the A3 reports +15.7c.
So putting in an offset will get it in the right direction, but to me it seems very difficult to get it to be correct all year around.