Temporal windows of the corresponding SORCE (solid red line) and TIMED (solid blue line) spectra. Obviously all spectra were recorded during solar flaring. None of them could cover the whole flare owing to the fixed exposure time of 3 min. In only two cases (5, 8) the spectra cover also a part of the flare peak. The shown lightcurves are GOES lightcurves, observed in a wavelength range of 0.5–4 Å.