Fig. 10
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Comparison of H2CO 3(0,3)–2(0,2), D2CO 4(0,4)–3(0,3), HDCO 4(1,4)–3(1,3) and HDCO 4(2,2)–3(2,1) lines with the baselines subtracted. The dashed lines represent velocities of –2, 2.8 and 9.9 km s−1. The CH3OCHO 19(4,15)–18(4,14) A transition (246.9147 GHz) that is near HDCO 4(1,4)–3(1,3) is shown in red, while the H13CN (3−2) transition (259.0118 GHz) in the same spw as HDCO 4(2,2)–3(2,1) is denoted in green.
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