Distribution of the major axis FWHM sizes at 3 GHz shown as a normalised histogram. The upper size limits were placed in the bins corresponding to those values, and the bin width is 0.5 kpc. The solid black curve represents a best-fit PDF to a log-normal size distribution (μ = 5.0 kpc and σ = 2.9 kpc). The PDF shown by the red solid curve was obtained by fixing the values of μ and σ to those derived from a survival analysis (μ = 5.5 kpc and σ = 3.2 kpc).