Fig. 1.
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Cumulative distributions of redshifts for 431 low-excitation radio galaxies. The solid black line is for FR 0s, the dashed red line is for FR Is, and the dash-dotted blue line is for FR IIs. The average redshift for FR 0s is ⟨z0⟩ = 0.037 ± 0.001, whereas that of FR Is is ⟨zI⟩ = 0.114 ± 0.002, and that of FR IIs is ⟨zII⟩ = 0.115 ± 0.003.
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