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Fig. A.2

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(CH3)2CO spectra near 101 GHz toward four positions (three acetone emission peaks and HC) in the Orion BN/KL region. b)c) Spectra correspond to the channel maps shown in Fig. 1 at 101 427 MHz and 101 451 MHz, respectively. Dashed lines indicate the VLSR of 8 km s-1 and correspond to the (CH3)2CO line shown at the top of each panel.

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