(continued from previous page). The grey histogram shows the total sample and each panel also shows the histograms for the three most common types of variable stars from the R23 data for that magnitude and color ranges (each in a different color that is maintained the same throughout the figure for a given variable type) as well as a fourth histogram with the rest of the R23 variables. The four histograms built from R23 data are cumulative, so the top colored line represents all of the variables. The blue line shows the fit for the total dispersion and the red line the corresponding distribution for the astrophysical (intrinsic) dispersion. The text at the top of each panel gives the results of the fits and the percentage of stars with a variability classification from R23.