Radial profiles of the mean tangential velocity, v_⊥,mean, and the difference between the directions of the angular momenta inside and outside the given radius, α(L_in, L_out), for the stellar component of the four galaxies from Fig. 1. The quantities were measured in 3D and in the projection on three principal planes of the respective galaxy. Angles are expressed in radians. The black vertical lines denote the inferred KDC radius, r_KDC.