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. 2017 Jul 19;3(7):e1700300. doi: 10.1126/sciadv.1700300

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Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 4 — Per-capita RTC emissions of RRs (A), MUs (B), and URs (C). The axis ranges of different pollutants are different, as shown in the legend. The per-capita emissions shown in the graphs are national averages in 2010. See figs. S4 and S5 for the per-capita emissions in 1990 and 2030. NMVOC, non-methane volatile organic compounds; TSP, total suspended particulate matter.