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Fig. 6


Graph of the rotational temperatures (orange bars) and column densities (blue bars), with their formal uncertainties (black lines), derived from the population diagrams. Vertical blue arrows are plotted to indicate column density lower limits over each corresponding molecule. The temperature scale is represented on the left vertical axis, and the column density logarithmic scale is represented on the right vertical axis. The limits of the temperature scale are different in both boxes to improve the visual aspect of the figures. The values represented are tabulated in Table 5.

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