Same as Fig. 3, but fitting alternative sets of models. In every case, only one SNcc model (Nomoto) has been fitted (Z_init = 0,0.001,0.004,0.008 or 0.02; Salpeter IMF). Top left: delayed-detonation SNIa model based on the observation of Tycho supernova remnant (Bravo, DDTc). Top right: combination of a Classical delayed-detonation SNIa model (WDD2) and a Ca-rich gap transients population model (CO.5HE.2C.3). Bottom left: combination of a Classical deflagration SNIa model (W70) and a delayed-detonation SNIa model based on the observation of Tycho SN remnant (Bravo, DDTe). Bottom right: combination of a Classical deflagration SNIa model (W7), a Ca-rich gap transients population model (CO.5HE.2C.3), and a Classical delayed-detonation SNIa model (CDD1).