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. Author manuscript; available in PMC: 2022 Feb 1.

Published in final edited form as: J Air Waste Manag Assoc. 2021 Feb;71(2):209–230. doi: 10.1080/10962247.2020.1826366

Figure 6. — Percent contribution of A) all PMF-predicted sources to total PM mass and B) tailpipe and non-tailpipe sources to total traffic-related PM mass in each size fraction (averaged across all communities).

Figure 6. — Percent contribution of A) all PMF-predicted sources to total PM mass and B) tailpipe and non-tailpipe sources to total traffic-related PM mass in each size fraction (averaged across all communities).