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. Author manuscript; available in PMC: 2021 Jun 10.
Published in final edited form as: Sci Total Environ. 2019 Jul 11;691:528–537. doi: 10.1016/j.scitotenv.2019.07.114

Fig. 6.

Fig. 6.

PAH diagnostic ratio plot of LMW to HMW PAHs. Standard deviation of the mean is presented. Samples used were n= 224, 108, 248, and 580 for the Gulf, Eastern, Southwest and Combined regions, respectively. P: Petrogenic, C: Combustion (Pyrogenic)