Results of 100 slug and cloudy simulations for a galaxy with continuous SFR of 0.001 M_⊙ yr⁻¹ and f_c = 1. Top panel: the median SED derived from the 100 slug calculations is shown in red, while the median of the cloudy SEDs computed in integrated mode is shown in blue. Bottom panels: histograms of the line luminosity for three selected transitions computed by cloudy in integrated mode for each input slug SED.