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Fig. 7

image

Plot of the νexp derived from the fit of the lines as a function of the Eu of the corresponding transition for several molecules. In the top, we did not represent each error bar to improve the visualization of the figure. A typical error bar of 4 km s-1 is plotted in the top left corner of the box. The values and uncertainties of the bottom correspond to the values given in Table A.2. For those lines that were observed in different epochs, we adopted an average value of the different measurements for the νexp and its uncertainty.

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