Relationship between the stellar mass (left panel), the star formation rate (centre panel), and the mean age of the stellar population (right panel) derived with CIGALE on the observed data (abscissa) and that derived on the mock catalogue as described in Sect. 3 (ordinate). Black filled dots are for Hα fluxes corrected for [NII] contamination and dust attenuation assuming [NII]λ6583/Hα = 0.2 and A(Hα) = 0.7 (see Sect. 5.1), blue open circles assuming [NII]λ6583/Hα = 0.1 and A(Hα) = 0.0. The black solid lines show the 1:1 relations.