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Fig. A.3


The integrated intensities of the 13CO maps of integrated area toward a) MON R2, b) S156, c) DR17/L906, and d) M17/M18. The color-scale maps are the same as Fig. 1. a) For the MON R2 region: 13CO contour levels are from 2.66 to 7.10 in steps of 0.89 K km s-1. b) For the S156 region: 13CO contour levels are from 2.53 to 6.76 in steps of 0.84 K km s-1. c) For the DR17/L906 region: 13CO contour levels are from 2.64 to 7.05 in steps of 0.88 K km s-1. d) For the M17/M18 region: 13CO contour levels are from 7.83 to 20.89 in steps of 2.61 K km s-1.

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