SED statistics for each snapshot analyzed in this work. The top panel shows the relative error R, and the lower panel the variance of variance VOV. For every snapshot, we show the results relative to the SED of the 6 observing directions, and we color-code the lines relative to each snapshot according to the corresponding time since the beginning of the SF in the MC. The dashed lines in both panels indicate the threshold of 0.1 below which the results are reliable.