Density maps of observational HRDs of Group 1 (top panel, sources having G_BP − G_RP > 1.8 mag), Group 2 (top panel, sources having G_BP − G_RP < 0.2 mag), Group 3 (second panel from top), Group 4 (third from top) and Subgroup 4a (bottom panel) of LAVs in dataset C with parallax uncertainties better than 10%. The background grey points show the full sample of dataset C with ϖ/ε(ϖ) > 10. Evolutionary tracks of (from bottom to top) 0.8, 1, 1.5, 2, 3, and 5 M_⊙ solar-metallicity stellar models from Ekström et al. (2012) are over-plotted in black, with the 1 M_⊙ track rendered in thick line. The axes ranges have been limited for better visibility.