Resolution: standard / high
Figure 6.
Concentration patterns during the Democratic National Convention (July 26–29) versus concentrations during the same days of the week before and after the Democratic National Convention. x-axis = hour of day; y-axis = concentration (μg/m3 for PM2.5 and EC, ppb for NO2)
Levy et al. Environmental Health: A Global Access Science Source 2006 5:16 doi:10.1186/1476-069X-5-16
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