Distribution of median values of log segregated into MS (grey), subgiant (blue) and giant (red) luminosity classes. The black solid histogram is the full sample. The vertical lines separate different CE groups according to Henry et al. (1996): the dashed line at −5.1 dex separates VI from inactive stars, the solid line at −4.75 dex separates inactive from active stars, and the dotted line at −4.2 dex separates active from VA stars.