Test data calibrated with the fitted polarization model. The data are the same as in Figs. 7 and 8 but now calibrated. In both plots, the data are shown as dots, and the input states as dashed lines. The different colors show the different input states. The left plot shows the polarization angle, and the right plot shows the DOLP. Since all states are fully polarized, the recovered degree of circular polarization is (100 - DOLP).