Comparison between this work and the literature: T_eff (upper-left panel), log g (upper-right panel), Fe I (lower-left panel), and Fe II (lower-right panel). Open circles denote T_eff and log g derived from photometry, open squares denote the same derived from spectroscopy, and open triangles indicate log g derived from theoretical isochrones. Data are from Barklem et al. (2005) (black), Cayrel et al. (2004) (red), Hansen et al. (2020) (cyan), Ishigaki et al. (2012) (yellow), Johnson (2002) (pink), Lai et al. (2008) (grey), Luck & Bond (1985) (orange), Mashonkina et al. (2017b) (blue), Pereira et al. (2013) (purple), Roederer et al. (2014a) (green), and Siqueira Mello et al. (2014) (magenta).