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. 2019 Feb 26;9:2745. doi: 10.1038/s41598-019-39196-0

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© The Author(s) 2019

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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Canonical Analysis of Principal coordinates related to temperature and time of storage based on all VOCs from 2013 and 2014 melons using TD-GC-TOF-MS: (a) 2013 and (c) 2014, temperature of storage at 4 °C and 20 °C; (b) 2013 and (d) 2014 days and storage at 4 °C and 20 °C. Each ellipse represents the 95% confidence interval. The plots use LD1 and LD2 with a percentage of correct classification of (a) 63.3% (n = 3 for fresh, n = 12, for 20 °C, n = 15 for 4 °C (b) 50% and (n = 3); (c) 93.3% (n = 3 for fresh, n = 12, for 20 °C, n = 15 for 4 °C; (d) 56.7% (n = 3). Key for (a) applies to (c) and key for (b) applies to (d).