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. 2020 May 27;6(22):eaay4945. doi: 10.1126/sciadv.aay4945

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Copyright © 2020 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 — (A) The summed HOM concentrations of each bin. (B) The cumulative HOM concentrations. Red and blue markers denote HOM concentrations under zero and 1.9 ppbv NO_x, respectively. The black dots give the ratio of cumulative concentrations of [HOM]_NOx:[HOM]_{w/o NOx}.