As in Fig. 7, but for the KOI sample of McQuillan et al. (2013). The evolutionary ages were computed with the aid of the Yonsei-Yale isochrones. The high-density horizontal set of points at low isochrone ages dominantly constitutes stars with observed stellar parameters outside the isochrone regime. The color coding is scaled by the best isochrone matching distance (Eq. (7)) and shows that most of these low-lying stars do not match the isochrones.