Fig. 1
Differential number counts normalized to S5/2 for ERS at 4.8 GHz. Filled squares are observational data (see De Zotti et al. 2010). The plotted curves represent the estimated number counts from the models by Toffolatti et al. (1998, dotted line), De Zotti et al. (2005, blue dash-dotted line), and Massardi et al. (2010, dashed line). Lower curves with the same line types as above represent the estimated number counts of flat-spectrum sources given by the same models.
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