Same as Fig. 8, but for the parallel model. The adopted yields are from François et al. (2004). Green filled pentagons are the mock data of the high-α sequence of the synthetic model, whereas purple filled pentagons indicate the mock data of the model low-α sequence. In the former case, the pentagons are shaded if the age is below 10 Gyr and the contribution to the total stellar density of younger stars is negligible.