CH₃OH gas-to-ice ratios (N_gas/N_ice) towards low-mass protostars in the Coronet cluster in Corona Australis (triangles). The square and the circle symbolise the average ratios for ten sources in Serpens SVS 4 and four sources in Orion B35A, respectively. The green shaded area corresponds to the interval of gas-to-ice ratios observed for the ten sources in the Serpens SVS 4 cluster. The dotted line indicates the average value for four sources from Öberg et al. (2009a). Upper and lower limits are marked as arrows.