Interesting study. I'd like to see the data on ≥80° and also dewpoints ≥70°, as well as a list and location of the 14 stations. Is this data freely available? Also what is the significance of those specific periods? I don't want to say the data looks cherry-picked, but it seems to me that the math would be more representative if you compared, say, 1895-1957 and then 1957 to present. Or maybe throw some trend lines in there. Regardless, that's pretty neat, thanks for posting.