From the slides:

…m not sure what this means, but if you’ve looked at the PurpleAir data closely, you might know what RH and PA(cf_1) mean.
Understanding PurpleAir vs. AirNow.gov Measurements of Wood Smoke Pollution
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Josh Hug
David Tran
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1 min read·
Oct 7, 2020
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From the slides:
PM2.5= μg m-3
• RH= Relative Humidity (%)
• PA_cf1(avgAB)] =PurpleAir higher correction factor data averaged
from the A and B channels
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Written by David Tran1.7K Followers
·1.93K Following
Building the best place to get work done at flow.club. I write about software, startups & running at davidtran.me and occasionally publish here.
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