Speed normalized by velocity dispersion within the ensemble cluster vs. the distance between galaxies and ensemble cluster normalized by R₂₀₀. The small points indicate galaxies with spectroscopy from SDSS. The big points represent the positions of host galaxies of our SNe Ia. The color bar shows the corresponding g− r color; the points filled with gray do not have color measurements. The solid lines show the cuts we applied to associate SNe Ia withclusters, and the dashed lines represent the prolongation of those cuts.