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Fig. 9

Fig. 9 Refer to the following caption and surrounding text.

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Column densities of H2O ice (top) and CH3OH ice (bottom) as a function of reduced extinction, AK,0Mathematical equation: $\akred$. Since AK,0Mathematical equation: $\akred$ traces the dust column integrated along the line of sight within a YSO envelope, it serves as a proxy for projected distance from the centre of the system, with higher AK,0Mathematical equation: $\akred$ corresponding to smaller impact parameters.

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