O3

NAAQS ( 2014 proposal; current; historic)
regulatory actions

primary 1-hr100 ppb__ mcg/m398th percentile averaged over 3 years (more than one-per-day allowed?)
pri. & sec.annual53 ppb__ mcg/m3annual mean

Attainment status
old standard
current standard
attainment
unclassifiable
nonattainment



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(10/16/14)