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I don't get this comment, are you joking? 0.8 micrograms per cubic meter "isn't great"? Typical concentrations of pm2.5 in outside air in winter time where I live are roughly 200-250 micrograms during the day, and into…
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I don't get this comment, are you joking? 0.8 micrograms per cubic meter "isn't great"? Typical concentrations of pm2.5 in outside air in winter time where I live are roughly 200-250 micrograms during the day, and into…