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. Author manuscript; available in PMC: 2016 Mar 17.
Published in final edited form as: Environ Sci Technol. 2015 Feb 25;49(6):3603–3610. doi: 10.1021/es505707e

Figure 4.

Figure 4

Scatter plot of national emissions of NOx against (a) the annual mean NOx as measured by all AQMN sites (empty circles), general sites (blue) and near-road sites (red); (b) the mean of model predicted NOx over the residential areas. Lines represent the linear correlations.