Total-to-peak flux ratio versus signal-to-noise ratio plot for all the sources in the catalogue. The upper panel shows the ratio derived using the S_p values derived by PyBDSF. The lower panel shows the same plot using instead of is the corrected peak flux obtained by multiplying S_p by a radially dependent correction factor (see Sect. 4.4 for details). The upper black line separates resolved from unresolved sources according to the relation . The lower black line shows the mirrored relation.