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Table 3.

Column densities of the molecules observed.

Line NDust peak NMethanol peak
(1012 cm−2) (1012 cm−2)
CH3OH 39 ± 4 59 ± 6
CH2DOH 2.8 ± 0.7 3.3 ± 0.8
H2CO 9 ± 2 7 ± 3
HCO 0.54 ± 0.35 0.78 ± 0.35
HDCO 1.30 ± 0.09 0.96 ± 0.09
D2CO 1.5 ± 0.3 1.1 ± 0.3
C17O 680 ± 60 810 ± 60

Notes. The value derived for H2CO comes from the average between the results of two radiative transfer models, as described in Sect. 5.1, and the error is the difference between the two values.

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