Sample RA–v (left) and v–Dec (right) maps to demonstrate that the apparently very complex and chaotic appearance in the zeroth and first moment maps shown in Figs. 2 to 5 can easily be resolved in the third dimension. The two top panels represent an area where all three layers of 12CO3–2 emission (see text) that we found in the pathfinder are visible, the centre panels were taken towards DR 21, and the bottom panels towards W 75 N.
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