MHT never reacts like that even in calm conditions anyway. They’re almost always fairly steady with gradual rises and drops even when they decouple. After that quick 12° drop it reports missing temp data and then the next 5 minuter is back to the correct +5°. Looks like the low should be +3° so nothing close to -7°. When I lived in Auburn there was never a rad night where they were colder than me...it was never even close. The cwop Auburn stations were 0, -1, and -3. I was near Massabesic Lake and we often got lower than CON. Total pit there.