The observed, deconvolved, source size distribution (in blue) in four flux density intervals. The magenta curves show the Windhorst et al. (1990) size distribution for the upper and lower bounds of the flux density bin. In each the vertical dotted lines are b_maj (on the left), and the approximate maximum size a source can have before it drops below the peak-flux detection threshold (on the right). The catalogue will be incomplete for sources larger than the right line.