Faint end of the observed white dwarf luminosity function from Limoges et al. (2015; solid square and continuous red line) compared to our best-fit Model 2 when ²²Ne sedimentation and a thick-disk population is taken into account (solid square and continuous black line), when ²²Ne sedimentation is disregarded (open circle and continuous gray line), and when only a pure thin-disk population is considered (solid triangles and dashed blue line).