Change of percolation functions of the model L512 with simulation epoch. Panels from top to bottom are for the initial epoch, z = 30, and epochs z = 10, z = 3, z = 1, and z = 0. Left panels: lengths of largest clusters and voids, ℒ(D_t) = L_max/L₀; centre panels: filling factors of largest clusters and voids, ℱ (D_t) = V_max/V₀; right panels: numbers of clusters and voids, N(D_t); all as functions of the threshold density, D_t. Functions are found for original non-smoothed density fields, which correspond to a resolution 1 h⁻¹ Mpc. Functions for clusters are plotted with solid lines, for voids with dashed lines.