Well before we 'throw out the baby with the bath water'. Let me clarify some things.
1. The location of the FARS shield
IS partially covered by the 30w PV panel above it during the noon hours and the Meteoshield is fully exposed.
2. I'm not sure if it matters..(and it shouldn't ) but I realized this morning that the SHT31 in the Meteoshield is mounted with the sensor facing south, fully exposed to the southern facing gills. It is perfectly centered horizontally and vertically in the shield cavity. Mounted with 3/4" standoffs to a narrow piece of black Kydex I molded into a bracket that attaches to the Meteo's bracket/base. ( I'll try to get a photo today)
I will, this afternoon, attempt to move the FARS 180 degrees opposing (on a east/west axis) the Meteo shield. This way insuring they get simultaneous and equal sun exposure. I will also turn the sensor to face a neutral position like Northeast, but other than due south. (this was purely coincidental
).
After which, I will post another day's results. Honestly, I'm not expecting
MUCH improvement, but at least it will be a more honest comparison.