CLV of median contrast values measured (symbols) for various disk features identified in PK-027 (top panel), PK-010 (middle panel), and PKR-011 (bottom panel) images restored from straylight degradation. For each bandpass, the various sub-panels show measurement results for solar features ordered by decreasing contrast, i.e. from the top panel results for bright plage, plage, enhanced network, and network regions, respectively. The error bars represent the standard deviation of measurements. For each disk feature and bandpass, the dot-dashed line indicates the average of values measured at disk positions μ ≥ 0.9, while dotted and dashed lines show the respective CLV derived from RH calculations with PRD and CRD and the reference model corresponding to the given feature, as also indicated in the legend. In the top panel, the solid blue lines show the threshold values applied to the feature identification.