Velocity diagrams for our 5 dSphs with the 3 sets of caustics overplotted (see Sect. 3.3). For Leo I: the dark pink diamonds indicate stars that are members of all three caustics, the black circles are stars that are members of no caustics and the blue stars are members of at least one, but not all the caustics. For the remaining dwarfs: the three set of caustics are the dotted, dashed and solid lines, the colours of the symbols indicate the probability p of being members. : red triangles, : yellow circles, : blue squares, : green diamonds according to Walker et al. (2007).