Dressler and Schectman bubble plot for the DSV test. Each circle indicates the position in the sky of the 73 cluster members and its radius is proportional to the deviation, |δi,V|, of the local mean velocity from the global mean velocity. The thin blue and thick red circles indicate where the local mean velocity is smaller or larger than the global mean velocity. The green arrow indicates the direction of the velocity gradient. The diagram is centred on the centre of the cluster and the large and small crosses indicate BCG1 and BCG2, respectively.