Fig. 9
Excitation temperature Tex (top-left), the optical depth 
(top-right), the column density 
(bottom-left), and the peak intensity ratios 12CO/13CO (bottom-right) of the mIVC. The contours mark the dust optical depth from Planck from 1 × 10-6 to 9 × 10-6 in steps of 2 × 10-6. At the bottom left the beam size of the IRAM 13CO(1 → 0) data is plotted.
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