Li as a function of mass for all stars in the sample, in different metallicity bins, where the blue symbols represent stars located below the Li desert. Downward triangles are Li upper limits. Each panel shows the location of the center of the Li dip (dashed black line) and the cooler side (red dotted line) based on a fit obtained by the analysis of clusters by Balachandran (1995) and Cummings et al. (2012), respectively. As in previous figures, circles are Li determinations and triangles are upper limits.