Table 7: Confidence intervals for different redshifts.

z		Reported interval	Confidence interval
(1)	(2)	(3)	(4)
1.597	0.53	(-2.92,1.72)	(-1.20,-0.32)
1.908	0.37	(0.92,15.08)	(-1.17,0.41)
1.915	0.36	(-18.34,6.74)	(-1.17,0.41)
1.970	0.34	(-6.74,24.34)	(-1.31,0.29)
1.973	0.33	(-2.64,2.04)	(-1.27,0.35)
1.976	0.33	(-10.60,10.00)	(-1.27,0.35)
2.168	0.26	(-2.39,3.39)	(-0.74,0.47)
2.185	0.25	(-2.60,1.00)	(-0.83,0.47)
2.329	0.32	(-13.44,2.24)	(-0.72,0.34)
2.451	0.28	(-0.92,2.92)	(-0.85,0.38)
2.455	0.29	(-6.07,2.07)	(-0.86,0.38)
2.456	0.29	(-4.83,5.23)	(-0.79,0.36)
2.464	0.31	(-1.08,3.08)	(-0.79,0.36)
2.493	0.26	(-1.09,10.49)	(-0.87,-0.04)
2.828	0.38	( -5.76,5.16)	(-0.50,0.74)

Notes.- Columns: (1) redshift; (2) length of the redshift interval for which the confidence interval is calculated; (3) single value reported by Chand et al. (2005) in units of 10-5; (4) calculated confidence interval from a group of data reported by Murphy et al. (2001b) in units of 10-5.