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Fig. 2

image

Spectra of para-H2CO transitions at 218 (left panels) and 291 GHz (right panels) of the 20 km s-1 cloud (upper panels) and G0.411+0.050 (lower panels), averaged over the whole OTF maps. Transitions of H2CO, as well as other molecules are marked in the spectra.

This figure is made of several images, please see below:

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