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. 2020 Nov 20;757:143823. doi: 10.1016/j.scitotenv.2020.143823

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© 2020 Published by Elsevier B.V.

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Fig. 5 — Chemical profiles for five PMF-resolved factors. Blue filled squares mean percentages of individual species in total mixing ratios of 35 NMHCs species for each factor. Red bars mean relative contributions of each factor to measured mixing ratios for individual species.