When comparing pollution data derived from our passive
sampling campaign in 2010 with the modeled long-term concentrations
from ESCAPE and APMoSPHERE (see Fig. 2a and b), we found no significant correlation for O3 (rs ¼ 0.435, p > 0.05), but a
significant and high correlation for NO2 (rs ¼ 0.868, p < 0.001).