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High pollution day vs low pollution day

PostPosted: Sat Dec 01, 2012 11:14 pm
by Wilberforce
Image

Last week, we had a high pollution day (actually several days) in Detroit.
The left image was taken on Thanksgiving day. This is NOT a ground fog.
(The temp was 65° F and the humidity was 42% and the sky was clear)
This was bona-fide SMOG.

My particle counts taken with the Dylos Meter show 10,000/350 counts
(count of PM 0.50 micron and PM 2.5 micron per one-hundredth cubic foot)
on the bad air day, with 400/20 counts on the good air day. This translates into
approximately 90 ug/m3 (bad day) and 7ug/m3 (good day) by particle weight.

Dylos Particle Counter
http://www.dylosproducts.com/?gclid=CIy ... IgodGl7ekg