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. 2017 Oct 17;16:108. doi: 10.1186/s12940-017-0312-7

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© US Government (outside the USA). 2017

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — a Number of emergency room influenza visits, b number of extreme precipitation days, c average temperature, d average O₃, e average relative humidity, and f average PM_2.5, lag 0–6 days in Massachusetts, by month during October 1, 2002 - September 30, 2008