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Figure

Comparison of annual variations in ozone 50th, 98th and 99.9th percentile values (calculated from hourly mean concentrations) and the frequency distribution of estimated trend (in (microgram/m3) per year).

Figure Created 12 Nov 2009 Published 12 Nov 2009 Last modified 29 Nov 2012
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Only stations, which reported data over at least six years in the period 1996-2002, are included.
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