Resulting stacked spectra for each physical parameter with the C3 sample (what we call Stack A, see text for more details). Left to right: M_Ks, M_FUV, and stellar mass. In each panel, the green faint line is the stack spectrum with the ∼0.6 Å/pixel sampling, while the black one is with ∼1.2 Å/pixel. The blue line is the 1-σ error spectrum. The vertical lines mark known UV lines (in black: emission lines; in red: ISM absorption lines). Information about the number of galaxies, the mean redshift, and the mean parameter are included in each panel.