Worked fairly consistently and well, then we had the smoke and haze in Washington state from all of the fires. (In fact many days, the sunlight was so low that it looked like twilight at high noon.)
After the third day the unit just stopped responding. I figured once the air clears and the sun comes out, all will come back… but nope, 2 weeks later and still no data. Unmounted Tempest, and tried pushing and holding the clear button but no response. Placing the unit in direct sunlight all day… still no joy.
Little worried that it is now a dud.