Dew point data
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Someone posted here a few months ago a site where you could get 99th percentile dew point data. Now I can’t find it.
Does that rig any bells?
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A collection of one thousand construction details organized by climate and house part
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Replies
ASHRAE Fundamentals has 0.4% and 1% dewpoint data, but you're probably looking for a website.
I typically use this site. It may be the one you are referring to:
https://ashrae-meteo.info/v2.0/index.php