Top: relative positions (left panel) and reduced phase space (right panel) in the case of the stream recovered with N_min = 15. Bottom: same as above but with the stream recovered with N_min = 30. Light gray points are gE0 particles, while blue ones are those belonging to the dE0. Yellow points represent dwarf particles within three effective radii from the dwarf center, while the recovered stream is colored in green (real stream particles) and in red (contaminants). Blue crosses indicate a group of particles further away from the dwarf main body, detected by COSTA in some runs (see text for details).