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Jeff Kaufman
jefftk.com
did:plc:k35xx6alir7rsmwfzh74abnp
Subway pm2.5 levels peak closer to 75 ug/m3 than 1,000 ug/m3, and aren't something I'd wear a mask for. The post I shared earlier was misreading (my own) graph. Sorry!
https://www.jefftk.com/p/subway-particle-levels-arent-that-high
2025-07-09T02:22:18.940Z