Comparison of COSI (S2010) and NESSY spectra to the ATLAS3 (Thuillier et al. 2004) and SIRS WHI (Woods et al. 2009) observations. COSI spectrum is available only from 90 nm onward. The gray areas show the uncertainties of the observed spectra. Longward of about 115 nm the uncertainties become indiscernible on the logarithmic scale. The dashed line in both panels designates the wavelength below which the COSI spectrum in S2010 was not shown because the authors have been aware of the non-converged hydrogen level populations in the outer atmospheric layers.