That doesn’t mean much to me. In layman’s terms, what what does it show?
What exactly do you not understand in that simple sentence?
The shaded areas in the various graphs indicate the fraction of the incoming solar radiation that is absorbed by the different species in the air. The bigger the shaded area, the more solar radiation is trapped as heat in the atmosphere.
The horizontal axis is the wavelength of the radiation, from UV through the visible and on into the infrared (right to left is shortest wavelength to longest wavelength).