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. 2017 Jun 12;7:3318. doi: 10.1038/s41598-017-03328-1

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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(a–e) Daily aerosol size distributions cluster results (bottom), average Daily N_10–500 particle number concentration (top) and average daily size distribution (on the right coloured panel); and (f) annual frequency distributions of the five aerosol categories. New particle formation events were also validated by N_3–10nm concentrations (measured by tandem particle counters with lower detection limits of 3 and 10 nm, respectively; see methods) of 316 ± 110, 168 ± 58, 128 ± 44, 73 ± 25, 99 ± 36 cm⁻³ for clusters (a–e), respectively.