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Fig. 1
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Abundances of all samples at T=10 K, nH=105 cm−3, ζ= 1.3 × 10−17 s−1 and FUV=1 Habing at 104 years as function of the hydrogen diffusion barrier. Numbers at the bottom indicate rRIN and its 95% confidence intervals. Pink crosses indicate nominal abundances and hydrogen diffusion barrier.
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