E1 has been discussed in Thompson et al. (2000); E2 in Narukage et al. (2002); E3 in Warmuth et al. (2001) and Khan & Aurass (2002); and E5 in Pohjolainen et al. (2001) and Warmuth et al. (2001). The He I data (E9 and E12) are studied in detail in Vrsnak et al. (2002).

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The main reason for this is that SXT usually switches automatically to a flare mode, in which primarily partial-frame images are obtained (which might only show a small region and therefore not catch a possible wave) and the exposure time is lowered, so that faint wave features are not recorded (these issues are discussed in detail by Hudson et al. 2003).

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