Recovered normalized SFR (SFR_n) from SPS models with different rotation rates, as shown in Fig. 9. The input data were generated for a mock galaxy with log(M/M_⊙) = 9.0 at a redshift of z = 10.0 with a constant SFR. Different colors represent the recovered SFR from different SPS models, normalized by the input SFH. The time bins are log-spaced out to z = 20, assuming that the SFH of the galaxies starts at that redshift. The most recent two age bins are fixed at lookback times of 0 − 5 and 5 − 10 Myr.