Fig. 3.

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Response functions. Left columns display the line core intensity in the Mg II k line as a function of time, with the top one referring to observation 7, and the bottom to observation 9. The middle panels show the optical depth of maximum response to temperature in these observations for the h2r feature. The right columns show the distributions of maximum response to temperature for each observation, in each case, for both h2r and k2r features.
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