Time evolution of the mass-weighted abundances for selected isotopes and cumulative abundances of lanthanides and actinides. The first and second columns refer to simulations ThK-S_BLh and ThK-S_DD2, respectively. The top and bottom rows show the results obtained with in situ NN and their relative differences with respect to the post-processed abundances computed with the tracer method. The horizontal dashed lines in the bottom panels indicate factors-of-unity deviations and the case ⟨Y_i⟩=⟨Y_i^pp⟩. Differences are displayed only at times for which ⟨Y_i⟩> 10⁻¹².