Comparison between the observed distribution of the logarithm of the spectroscopic mass function (solid black line) and the best fits for the uniformly distributed (red dotted line connected by heavy dots) and Gaussian-distributed (green dashed line connected by open squares) companion masses. For the former, I used M_2,l = 0.25 M_⊙ and M_2,u = 1.28 M_⊙, while for the latter, I used μ = 0.76 M_⊙ and σ = 0.27 M_⊙. The top panel shows the fraction of systems, while the bottom panel is the cumulative fraction of systems. It is clear that both samples are good fits, given the intrinsic errors of the observed distribution. (A colour version of the figure is available online.)