Selection of ψ(t) functions used to compute the models under the cosmological SFH proposed in Gladders et al. (2013). The colour encodes the values of the parameters t₀ and τ as labelled. Solid and dotted lines of the same colour share the value of t₀, but differ in τ, which is varied between a minimum and a maximum value in steps of 0.05 Gyr. The four curves plotted as dashed lines describe galaxies which fall outside the most populated region in Fig. 9 of Gladders et al. (2013). All time variables are in gigayear. For each ψ(t) function, the maxima occur when the age of the Universe is t_U = exp(t₀ − τ²).