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. 2017 Nov 14;16:41. doi: 10.1186/s12942-017-0114-8

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© The Author(s) 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. 6 — Daily predicted AQT for the locations of the flagging sites. Each subplot contains four curves: the long-term monthly average (grey) across all sites, the long-term monthly average for the flagging site (dark red), the 2014 monthly average for the flagging site (black), and the daily predicted AQT for 2014 yielded by RF (blue). Note that in 2014, the sampling stopped in Nijverdal and Eijsden