I know 7.1 * above boiling point of water brings sap to 66*brix. I was calibrating thermometers today and where I'm at in Adirondack's all my thermometers had water boiling right around 209*

I know that 212* is at 29.9" barometer at sea level. I was wondering if anyone else had such differing temps or if it's not that unusual.

Hopefully the good Dr. reads this and chimes in!