10.1371/journal.pone.0118141.g003 Qin Yang Qin Yang Huaguo Chen Huaguo Chen Baizhan Li Baizhan Li Plot with PC1 and PC2 from principal component analysis. Public Library of Science 2015 dust samples Polycyclic Aromatic Hydrocarbons Σ18 PAHs concentration ILCR hca Guizhou Province Potential Human Health Risk Polycyclic lifetime cancer risk 2015-02-26 03:02:56 Figure https://plos.figshare.com/articles/figure/_Plot_with_PC1_and_PC2_from_principal_component_analysis_/1319059 <p>(a) Factor loadings of 18 PAHs on two components, and (b) factor scores of sampling locations on the PC1 and PC2.</p>