Notes. The first column indicates the designation of the run. The second column corresponds to the relative amplitudes of the initial sine waves, namely, ϵ_2D = ϵ_y/ϵ_x and ϵ_3D = (ϵ_y/ϵ_x, ϵ_z/ϵ_x) for two and three sine waves, respectively. The third column gives the value of ϵ_x. The fourth and fifth columns indicate the resolutions of the numerical simulations: the spatial resolution of the grid used to solve the Poisson equation, and the spatial resolution of the mesh of vertices used to construct the initial tessellation, respectively. In the sixth column, is the shell-crossing time estimated by 40LPT for the two-sine-wave initial conditions and by 15LPT for the three-sine-wave initial conditions. The seventh, eighth, and ninth columns indicate the scale factor a_sc at shell crossing measured in the simulations (see Appendix A1 in STC), the scale factor of the output time used for the analyses performed shortly after collapse in the simulations, and the fractional difference between a_sc and a_sim, respectively.