AMBRE LTE A(Pb) abundances (filled stars) and the literature values (see legend in inset): wide diamonds are from Travaglio et al. (2001), pentagon from Van Eck et al. (2001), up pointing triangle from Sivarani et al. (2004), hexagon from Ivans et al. (2005), down pointing triangle from Jonsell et al. (2006), plus sign from Roederer (2012), squares from Hampel et al. (2019), narrow diamonds from Roederer et al. (2010), and circles from Roederer et al. (2014). The top and bottom panels are colour-coded by the difference between the literature and AMBRE T_eff values and the literature and log(g) values, respectively.