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Fig. B.4

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Rotational diagrams of SO, SO2, OCS, H2CO, D2CO, H2CCO, c-C3H2, CH3OH, CH3CN, CH3CCH, and CH3CHO. The parameters Nup, gup, and Eup are respectively the column density, the degeneracy, and the energy (with respect to the ground state of each symmetry) of the upper level. The derived values of the rotational temperature and the column density are reported in each panel for each species. For D2CO the blue and red circles indicate ortho and para transitions, respectively. For CH3OH the blue and red circles indicate E and A transitions, respectively. Red stars in the c-C3H2 (83,6 – 82,7) and CH3OH (102,9 – 93,6) indicate transitions not used in the fit, due to contamination by other molecules. The blue arrow in the CH3CN panel indicates 124 – 114 transition, which was not used in the fit as upper limit. The error bars include the errors on the flux, as stated in Table A.4, and the uncertainty of the calibration of 20%.

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