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Table A.10

Median column densities in a(x) = a × 10x for observations (including detections and upper limits) and best-fit HMC model.

Molecule Obs. col. den. Mod. col. den.
[cm-2] [cm-2]

CO 2.2(19) 6.8(19)
HNC 5.5(14) 1.7(15)
HCN 3.5(14) 2.0(15)
HCO+ 7.6(14) 1.5(15)
HNCO 1.7(13) 5.0(16)
H2CO 2.7(14) 2.6(14)
N2H+ 5.5(13) 7.8(13)
CS 1.3(16) 7.5(15)
SO 5.2(14) 6.6(16)
OCS 1.7(15) 1.3(15)
C2H 4.3(15) 2.4(14)
SiO 2.2(13) 5.6(13)
CH3CN 5.2(13) 6.0(13)
CH3OH 8.7(14) 3.2(12)
DCO+ 2.0(12) 1.7(13)
DCN 8.0(12) 8.9(12)
DNC 8.7(11) 8.1(12)
N2D+ 2.2(11) 5.5(11)

Agreement 14/18 = 78%

Notes. Modeled best-fit values in italics do not agree with the observed values within one order of magnitude. If the molecule is detected in less than 50% of the sources, we marked it as an upper limit.

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