Spectral Measurements of Solar Irradiance and Radiance in Clear and Cloudy Atmospheres - Short-Wave Solar Radiation in the Earth's Atmosphere - page 98

Fig. 3.9. Informative points of irradiance spectra obtained 16th October 1983. The figure is
analogous to Fig. 3.6 excluding non-informative points
Fig. 3.10. Informative points of the irradiance spectra obtained 16th May 1984. The figure is
analogous to Fig. 3.8, excluding non-informative points