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. Author manuscript; available in PMC: 2019 Mar 1.
Published in final edited form as: Environ Pollut. 2017 Nov 26;234:297–306. doi: 10.1016/j.envpol.2017.11.033

Fig. 4.

Fig. 4.

A) First (x-axis) and second (y-axis) principal components in a principal component analysis using summed peak areas for all compounds within a category; B) box and whisker plots representing the range of peak areas for compounds within a category; C) box and whisker plots representing the range of peak areas for compounds within each sample; and D) heat map showing the number of compounds that fall into each category by sample. Blank squares indicate no A1α compound was present for a category in a sample.