Same as Fig. C.1 for several SEDs obtained with starburst99 with a Kroupa (2001) stellar initial mass function for a metallicity Z = 0.004 at an age of 1 Myr. The color coding indicates the different cases proposed by starburst99: Geneva tracks with standard mass loss, Geneva tracks with high mass loss, original Padova tracks, and Padova tracks with AGB stars. The PopStar model at an age of 1 Myr is shown for reference. We see that, at this age, all the SEDs are exactly sumperimposed.