Point symmetric galaxies. Mean velocity field Ṽ(R, ϕ) in elliptical annuli as a function of the PN eccentric anomaly ϕ, folded around ϕ = π for the FRs NGC 4473, NGC 4494, NGC 5866 and NGC 7457, and the SR NGC 4552 (colors as in Fig. 2). Ṽ(R, ϕ) is reconstructed using the folded catalogs, and shown at the position (R_i,ϕ_i) of the actually observed PNe. The solid lines are the best rotation model (see Eq. (10)) fit to the velocity field.