Stellar mass distribution of sources as a function of different CO proxies available in SIDES. The stellar mass distribution of SIDES sources is shown in grey scale as a function of different proxies up to z < 3.5 (from left to right): M_* − SFR, M_* − L_IR, and M_* − S₈₅₀. The best fits for each relation in each redshift bin (given in Table 1) are over plotted, from pink for the first bin (0 < z < 0.35) to cyan for the last bin (2.75 < z < 3.5).