Top: Observed 1D NIRSpec prism spectra (grey), photometry (yellow points) and best-fit model spectra and photometry (red) for GS-z5-Q1 (left) and COS-z5-Q1 (right). The MIRI points are shown in the right extension to the figure and correspond to F560W (just GS-z5-Q1) and F770W (both). Bottom-middle: χ values for the spectral fit with the NIRCam filters overplotted (left) and an RGB image of the galaxy (right). Notable emission lines are overplotted. Bottom: SFHs for the two galaxies (orange line) showing SFR against lookback time (redshift). The formation time (t₅₀, the time 50% of the mass is formed) and quenching time (t₉₀, the time 90% of the mass is formed) and overplotted as blue and red lines, respectively.