Dressler & Schectman bubble plot for the DSV test. Spatial distribution of the 143 cluster members, each indicated by a symbol: the larger the symbol, the larger the deviation |δ_i, V| of the local mean-velocity from the global mean-velocity. The blue thin and red thick circles indicate where the local mean velocity is smaller or larger than the global mean velocity. Here the bubble size is less enhanced than the standard size for better readability (size equal to exp(w/3), with w = |δ_i, V|). The green arrow indicates the position angle of the velocity gradient that is calculated within 0.5 R₂₀₀. The diagram is centered on the BCG.