Kiel diagram of the whole sample. On the left the results from Run 0, in the central panel from Run 1, and on the right the final set of results, with T_eff from spectral analysis and log g from the photometry, as described in Sect. 3. In the three panels we show two grids of PARSEC isochrones (Bressan et al. 2012), with ages from 0.1 to 14 Gyr, with steps of 0.05 Gyr, at solar metallicity (in grey, Z = 0.013), and at super-solar metallicity (Z = 0.06, in purple).