Galaxy luminosity functions in the B,V,R, and I rest-frame bands (from left to right) for stacked clusters in cores and outskirts. The first line of figures is for cluster cores (r ≤ 500 kpc) and the second line of figures for cluster outskirts (500 <r ≤ 1000 kpc). Red and blue points, respectively, correspond to red-sequence and blue GLFs normalized to 1 deg². The red and blue curves show the best Schechter fits to red-sequence and blue galaxies and the red and blue vertical lines indicate the corresponding 90% completeness limits. The slope of the fit α is given for each population.