Chemical abundances with respect to CH₃OH of ten COMscalculated at T = 150 K by the models N2-CR50. The different symbols indicate the abundances calculated with different χ_UV. Model Tdhoc-UV100 shows the results obtained using the dust temperature expression given by Hocuk (2017) with χ_UV = 100. The horizontal black lines show the observed abundances relative to CH₃OH. The gray boxes represent the 1σ uncertainties.