Fig. 8
Comparison between the range of the observed spectra on the disk (between black curves) and the predicted spectra (blue and red curves), assuming that Te = TH = 1550 kK elsewhere in the corona. Theoretical curves are labeled with the thickness h2 of the upper part of the TR (Mm). Red curves refer to 2004 (near cycle maximum) and blue ones to cycle minimum (2008–2009).
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