Normalized light curves for the four regions marked in Fig. D.1(c). (a) & (b) Normalized intensity variations at two different locations within the EUV L2 footpoint. (c) Same as (a), but for a region in the moss. (d) Same as (c), but for a region farther from the moss. The threshold of 20% ⟨I/I_avg⟩ and 2σ levels are indicated by dashed (in red) and dotted horizontal lines, respectively, in all panels.