EDITORS NOTE: At about 13:00, Jason discusses carb icing and states 72 degrees. The answer, according to an AOPA Safety Brief, is up to 100 degrees F at 50% humidity. Here is the link to the Safety Brief.
https://www.aopa.org/-/media/Files/AOPA/Home/Pilot%20Resources/ASI/Safety%20Briefs/SB09.pdf
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