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Fig. 7


Artificial line profiles of ions with different formation temperature ranging from log (T/K) = 4.0 to log (T/K) = 6.1. The three emission components are shown as dotted lines, and the total profiles are shown as diamonds (QS network) and asterisks (CH network). Red lines are the single-Gaussian fitting profiles. The QS network profiles are shifted in the y-axis by 60 to avoid the overlap with CH profiles.

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