Fig. 2.
As in Fig. 1(b) but for the ratios of 160 nm and 170 nm AIA filters. The green curve representing a quiet Sun region adjacent to the AR shows the comparison with the ratios from the footpoint regions (black and magenta, cf. Fig. 1). The short vertical bars and the vertical dashed line denote the same time-stamps as in Fig. 1(b). See Sect. 3 for details.
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