P1, P2, P5 stars with M ≤ 1.2 M_⊙, N_PIC ≤ 50 ppm h^1/2 and satisfying constraint of case II in Table 6. Crosses indicate the (representative) PIC uncertainties for three target stars. Evolutionary tracks of stellar models built with a given initial chemical composition and α_MLT value are represented by the same color: cyan (α_MLT = 1.845, Y₀ = 25, (Z/X)₀ = 0.0136, no atomic diffusion included, masses in the range [0.8–1.10] M_⊙ in steps of 0.05 M_⊙) or red (α_MLT = 1.642, Y₀ = 0.25, (Z/X)₀ = 0.0246, atomic diffusion included, masses in the range [0.8–1.25] M_⊙ in steps of 0.05 M_⊙).