Column density profiles of CH₃OH (left) and N(CH₂DOH)/N(CH₃OH) profiles (right) of various diffusive models, either including solely H-addition reactions (round markers) or H-addition and H-abstraction reactions (diamond markers) combined with either a constant reactive desorption efficiency of 1% (grey) or an experiment-based reactive desorption efficiency based on Minissale et al. (2016b) (navy). The observed profiles are depicted in black. Errors are shown as grey-shaded areas.