Measured DOLP for the different input states. Left and middle: linear input states, where the input DOLP is 100%. Right: circular states, where the input is fully circularly polarized, so 0% linear polarization. The data points are shown in different colors for the different states. The data from 50 and 70^° elevations are shown together. The lines in the same color show the model prediction for each state (solid line for 70^° elevation and dotted for 50^° elevation). The dashed gray line shows the input values in all plots.