Map of average summer ozone levels

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Figure 6 Differences in the meteorologically-adjusted four-year average summer O₃ levels from 1997-2000 to 2003-2006 based on daily maximum 8-hr values

Note: _Blue regions correspond to areas of projected decreases in PM_2.5concentrations while yellow to red regions correspond to areas of projected increases in PM_2.5 concentrations.

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