Luminosity function. The median of the posterior probability density of R₀ϕ(L) = dR₀/dln(L) (i.e. the local rate density per unit logarithm of the peak luminosity) from the full sample analysis is shown with a solid red line, while the dashed orange line refers to the flux-limited sample analysis. The shaded regions encompass the symmetric 90% credible interval at each fixed L. We show for comparison the corresponding results from W15 (blue) and G16 (grey – their fiducial model ‘a’). The credible region of W15 is computed assuming uncorrelated errors on their parameters.