Source-count distribution ﹩{dN}/{dS}﹩ as obtained from the 6 yr Fermi-LAT data set using the MBPL approach. The ﹩{dN}/{dS}﹩ distribution has been parameterized with a pure MBPL with (a) two and (b) three free breaks. The solid black line depicts the best-fit ﹩{dN}/{dS}﹩ given by the Bayesian posterior; the corresponding statistical uncertainty is shown by the green band. The dashed black line and the blue band show the same quantities as derived from the profile likelihood. Red points depict the ﹩{dN}/{dS}﹩ distribution derived from the 3FGL catalog. Poissonian errors ﹩\propto \sqrt{N}﹩ have been assumed. Gray points depict the same quantity derived for low fluxes, but without any correction for catalog detection efficiency applied (see Section 4). These points have been included for completeness only, while lacking any meaning for comparison. The vertical dashed line depicts the sensitivity estimate S_sens discussed in Section 4.1.