Examples of comparisons of modeled synthetic spectra with experimental spectra (red line) obtained by Liu et al. (1995) with a spectral resolution of 0.0125 nm. The blue line and the dashed green line represent the best fits obtained by precipitating a 100 eV mono-energetic (best fit A) and Maxwellian (best fit B) electron flux distributions. The four spectral windows shown have a width of 1 nm. In the ii window around 121.567 nm, the Lyman-α line was filtered out.