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Fig. 4

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Selected velocity-integrated maps for the different transitions observed in the GC. Black contour levels for the molecular line emission (on a scale) are −3, 3, 6, 9, 12, 15, 20, 30, 40, 50, 70σ (1σ=0.48 K km s-1) for the first six columns, and − 3, 3, 6, 9, 12, 15, 20, 30, 40, 50σ (1σ=0.72 K km s-1) for the last column, respectively. The wedges at the sides show the intensity scale of the line emission on a scale.

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