Relative ages for the primary and secondary components of all target binaries where both components could be placed in the HR diagram. Filled squares show targets where both components exhibit low veiling r_K < 0.2. Targets with open squares have at least one component with strong veiling r_K ≥ 0.2, thus it is likely that the age estimation from the HR diagram is biased, since extra luminosity from accretion makes the targets appear brighter and thus younger.