Distributions of our inner disk model. Bottom panel: SFH; middle: age-metallicity relation; top: metallicity distribution. The thick curve corresponds to the best fit model derived in Snaith et al. (2015), or “fiducial model”, while the thin curve represents the same model, but where the small-scale variations in the SFH have been smoothed out. It shows in particular that the third peak (at [Fe/H] ∼ −0.8 dex) in the Snaith et al. (2015) is due to the small peak in the SFH at age ∼12 Gyr, and is probably not significant. The blue area in each plot emphasizes the quenching epoch of the SFR in the MDF and age-metallicity relation.