Top: same as Fig. 3 but for o-CH2 observations made using the Onsala 20 m telescope toward the Orion Bar region. The blue circles represent the beam size of the Onsala 20 m telescope centred at the different pointing positions and the dotted white circle marks the KP beam at the Orion Bar position marked in Fig. 2. Bottom: stacked and averaged o-CH2 spectra obtained by combining the Orion KL/S pointing positions (1), (3), and (4), two at a time and all together. The line fits are scaled using the line parameters obtained toward Orion Bar positions (2) and (5).
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