υ_c calculated for the different snapshots in simulation L2 from Laporte et al. (2018). The dotted lines show the azimuthally averaged value of υ_c,true, with the shaded region showing the 1σ quantiles of the intrinsic variation. The left panel shows t_{1,2,3,4,5}, corresponding to the top row of Fig. 10. The right panel corresponds to the bottom row of Fig. 10, showing the results for t6 in different slices for x ≶ 0 and ɀ ≶ 0.