Average cosmic SFRD calculated from five ${(26\mathrm{Mpc})}^3$ simulation boxes, with the shaded region indicating the full dispersion of the curves. We compare with some determinations from literature: solid and dashed black lines represent the fits to the cosmic SFRD obtained by Madau & Dickinson (2014) and Davies et al. (2016) respectively, while black circles show the determination of Driver et al. (2018). Following their recommendation, the data from Madau & Dickinson (2014) have been scaled by a factor of 0.63 to convert from a Salpeter (1955) to a Chabrier (2003) IMF. The remaining data points require no further conversion.