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. 2018 Jan 29;13(1):e0191124. doi: 10.1371/journal.pone.0191124

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© 2018 Ruano et al

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig 3 — This panel of six plots display the percentage of contribution to components PC1 (a-d), PC2 (b-e), and PC3 (c-f) by quantitative (a-c) and qualitative (d-f) variables.