[Ce/Y] ratio vs. [Fe/H] at the stellar surface at the end of the evolution from all the Monash models with [s/Fe] >  0.25 reported in Table 2. As in Fig. 3, the different colours represent different stellar masses. The solid lines represent the models with M_mix = 2 × 10⁻³ M_⊙, the dashed lines with M_mix = 1 × 10⁻³ M_⊙, and the different types of dots represent the following M_mix values: circle = 1 × 10⁻³ M_⊙; square = 4 × 10⁻³ M_⊙; triangle = 6 × 10⁻³ M_⊙; cross = 1 × 10⁻⁴ M_⊙; and diamond = 0.