Fig. 7
Fractional abundance for B1-2 fast warm-up (from 10 to 500 K) model at a gas density of 107 cm−3 for the time period 5–50 kyr without reaction–diffusion competition. All species are color coded as in Fig. 6 with horizontal lines showing the observed abundances for B1/B2. The abundances of CH3 OH, CH3 OCHO, and C2 H5OH are not reproduced.
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