**Table 2:** QSO samples for RLF and redshift-cutoff analyses.
Sub-sample	Sample 2 $^\dag$		Sample 3 $^\ddag$
with measured z UKST ID	342		242
with measured z CCD ID	13		10
total QSOs with measured z		355		252
no measured z UKST ID	17		11
no measured z CCD ID	6		4
total QSOs with no measured z		23		15
no ID (no measured z)	1	1	1	1
Totals QSOs + non-ID	379	379	268	268

$^\dag ~ S_{\rm 2.7~GHz} \ge S_{\rm lim}$ , $+2.5\hbox{$^\circ$ }> \delta > -40\hbox{$^\circ$ }$ , area 3.569 sr.
$^\ddag ~ S_{\rm lim} =0.25$ Jy, $S_{\rm 2.7~GHz} \ge S_{\rm lim}$ , area 2.278 sr.

Source LaTeX | All tables | In the text

	1 Introduction
	2 The redshift distribution
	3 The Radio Luminosity Function (RLF)
	4 The redshift cutoff
	5 The form of the evolution
	6 Summary
	References