This figure summarises the results presented in Sect. 4.2. The two top panels show the SMFs for the highest redshift bins discussed in this paper. The bottom panels show the LF at 1.4 GHz derived from our model in the same redshift bins. The yellow dashed and purple solid lines respectively indicate the predictions obtained when adopting a Double Schechter Function (W23) and a Double Power Law (this paper) for the SMFs fitting. The hatched grey area highlights the difference between the two curves. Data points are the same as in Fig. A.2 for the SMFs and Fig. 2 for the LFs, highlighting in red samples which include dark galaxies.