Since the data are measured in two different ways, namely by UV absorbance and X-ray scattering, they can be expressed as a whole in 3D plots as follows.

Figure 1:3D view of SEC-SAXS data
Observe here, the following points. Contrasted between UV and X-ray:
In the spectral view, horizontal coordinates are measured in different variables, namely wavelength and scattering angle (Q: momentum transfer).
In the elutional view, horizontal coordinates are measured in similar variables, namely frames, but not necessarily with the same intervals.
Peak height proportions are different. That is, the first peak is taller in UV while it is shorter in X-ray.