Figure 3.

Predicted and measured PAH levels in crayfish tissues determined using PLS on averages calculated by inputting “zero” for values below MDLs (●) compared to (A) ordinary least-squares regression (Δ) or (B) PLS on averages calculated by inputting MDLs for nondetects (○). Asterisks indicate that FLO, BAP, IPY, BPY, and DBA were unable to be modeled using ordinary least-squares regression. The solid 1:1 diagonal line indicates perfect prediction, whereas the dotted (±0.5 from 1:1) and dashed (±1 from 1:1) lines are included simply to assist the reader in comparing general trends between the predictive models. Data points are in modeled units.