Fig. 2.
Distribution of the WATCAT sources redshifts. The blue line refers to the N ∝ z3 relation normalized to the number of sources in the z bins between 0.05 and 0.09. The number of WATs in the z range between 0.13 and 0.15 appears to be consistent with this trend, indicating that the catalog is almost complete in the explored redshift range (see Sect. 2 for additional details).
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