Evolution of the averaged abundances of the fictitious particles during the convective s-process in a 3M_⊙, [Fe/H]=-2.5 star using the large network (Large; solid line), the fictitious network without modifications (Fictitious; dashed line), and the fictitious network with approximated reaction rates (Fictitious + Approx; dotted line). The abundances are averaged over the maximum extent of the convective shell (0.810 ≤ M_r/M_⊙ ≤ 0.817528). The mean abundance Y_vhs is multiplied by 10^−0.2 to distinguish it from Y_hse. The thermal pulse starts at model 60609 and ends at model 61002, corresponding to a duration of 39 years.