Probabilities of voids, walls, filaments, and knots as a function of the redshift. These probabilities are shown in blue, green, orange, and red, respectively. Each panel is obtained at a given smoothing scale. Dots are measurements from the simulation, dashed lines are the Gaussian prediction, and solid lines are the prediction obtained with the Gram-Charlier formalism at next-to-leading order. The error bars are errors on the mean but are too small to be distinguished.