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. 2009 Nov;99(Suppl 3):S629–S635. doi: 10.2105/AJPH.2008.149138

FIGURE 2.

FIGURE 2

Diurnal patterns of traffic volume and pollutant concentrations at the fixed site, with pollutant concentrations presented as hourly averages throughout the monitoring campaign as a percentage of the maximum hour-of-day average by pollutant: Mission Hill Neighborhood, Boston, MA, 2007.