Fraction of survived clumps of each of the 30 simulations run in the face-on (top panel, in red), edge-on (middle panel, in green) and spherical (bottom panel, in blue) configurations. A clump is flagged as survived if its distance from the centre of the halo at the end of the simulation is larger than 1 kpc. The vertical solid line and the shaded area show the median fraction of survived clumps ${\stackrel{\sim }{f}}_s$ and the 1σ interval, respectively (also reported in the legend).