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Table 3

Selected abundance ratios in the modelled components.

Species Abundance ratio Component

H2Oh/(COw+COh)  ~0.02 hot and warm
OHw/(COw+COh)  ~0.01 hot and warm
Ow/(COw+COh)  ~0.8 hot and warm
OHw/H2Oh  ≲0.5 warm/hot
COw/COh  ~20 warm/hot
H2Oh/COh  ~0.4 hot
CH/H2Oh  <0.01 hot
Ow/OHw  ~100 warm
HCO/HCNw  ~2.5 warm
HCO/HCNc  ~0.2 cool
H2Oc/COc  <0.08 cool

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