Observed separation of the components in the multiple systems vs. the measured flux densities of the individual disks. Only the first two letters of the names are shown, e.g., CI is for CIDA 9. The blue point for UZ Tau W represents the values for the flux of the western components of the UZ Tau system, assuming only the distance between Wa and Wb. Top panel: only the objects studied here, while bottom panel: targets studied by Akeson et al. (2019), reported with gray symbols with red and black edges for the primary and secondary disks, respectively.