Figure 14. Plot of C29 ααα 20S/(20S+20R) versus C29 ββ/(ββ+αα) sterane isomerization ratios from the solvent extracts of this study. The outlier sample Bailer 3713.25–3715 ft is not included in the logarithmic regression. R = right-handed enantiomer; R2 = coefficient of determination; S = left-handed enantiomer.