Fitting results of the piecewise linear model (PLM) with n_p = 1−4 for each target cloud. The fit models are shown as red lines with shaded confidence intervals, overlaid on the individual measurements. The median trend of log₁₀(W8621/A_V) as a function of log₁₀(A_V) is shown by the blue squares. The locations of the knots (k) for each PLM are indicated by dashed orange lines. The model selected as optimal for each cloud is marked with a green check mark. The cloud name, distance, and number of sightlines used in the fit are also marked for each cloud.