PCB                     concentration of polychlorinated biphenyl (PCB)
                        in the yolk lipids of pelican eggs in ppm
fit.sld.lmom            Fit the skew logistic distribution using
                        L-Moments
lmom.sample             Calculate sample L-Moments
plotsl                  Plots of density and distribution function for
                        the quantile based skew logistic distribution
qqsl                    Quantile-Quantile plot against the skew
                        logistic distribution
sld                     The quantile-based Skew Logistic Distribution
