Comparison of the median stellar masses of our z ~ 4 sample with 705 galaxies derived from SED fits assuming the star formation histories listed in Table 1. The masses are compared to those derived from model A, plotted on the x-axis. Black triangles show model B with constant SFR, blue and red symbols the rising histories (model C and D respectively), yellow circles show the delayed SFHs (model E). For each model the same number of galaxies are plotted. Invisible data points are hidden close to the one-to-one relation.