Observational HRDs for the 12 identified disk streams. Sources that do not satisfy the astrometric quality criterion RUWE < 1.4 (Lindegren et al. 2021) or have large photometric uncertainties (G_err < 0.007 mag; G_RP,err < 0.03 mag; G_BP,err < 0.15 mag) have been removed to reduce large random scatters due to bad measurements. Colored points represent each cluster’s members. The corresponding best-fitting isochrones are shown as gray lines; their respective ages can be found in Table 1. The dashed horizontal line indicates the fitting range limit. Sources fainter than absolute G magnitudes of 10 are removed from the fit due to empirical discrepancies between isochronal curves and data points (see Ratzenböck et al. 2023b).