Evolution of chemical abundances at all radii (top to bottom: 1.5, 5, 20, and 30 AU) for a constant grain size of R_grain = 1mm. Solid profiles show ices (species names starting with G). Dashed profiles show gases. Left panels: Chemical models initiated with all elemental C, O, N, and S in molecules (MOL in inset). Right panels: Chemical models initiated with all elemental C, O, N, and S as atoms (ATOM in inset). Vertical dotted lines indicate the evolution times used for the analysis: 0.1Myr, 0.5Myr, 1Myr, 2Myr, and 5Myr.