I am at sea level.

I just boiled water and watched the temperature on an industrial thermometer (belongs to husband) and a digital candy thermometer (belongs to me)

The bubbles started to leave the bottom of the pan at 60 degrees C (140 F)

I stirred to disperse the bubbles (did not stop the light boiling)

A full rolling boil began @ 70C (160F)



It was at a full boil (could not increase as temperature increased) at 80C (176F)


Normally, I think most of the posts here are crazy (but entertaining) but this one is true. I was able to replicate on the other side of the world at sea level.