As in Fig. 9 but for spectroscopic T_eff. The authors are indicated in the plots in the left panels. In all plots, the black lines represent the perfect agreement and the red lines the trends. When the trends are not significant, the offsets are drawn with dashed red lines. T_eff from Ramirez14a (plus symbols) and Ramirez14b (green circles), derived with the same method, are compared in the same plots.