Comparison of the predicted fluxes to the observed fluxes coming from publicly released data of the near-infrared spectroscopic surveys 3D-HST (purple), FMOS (green) and LEGA-C (cyan). The contours correspond to iso-proportions of the distribution density starting at 20% with a 10% step. The scatter plots are indicated for the smallest samples. For our comparison we selected emission line measurements observed with S/N ≥ 3.5.