Phase angle Polarization Error (degree) (%) (%) 10 0.7 1.0 15 0.8 0.9 20 4.7 0.9 25 6.0 0.8 30 7.1 0.8 40 7.1 0.9 50 7.3 0.8 60 6.8 0.8 70 9.1 0.9 80 11.2 0.9 90 11.3 0.8 100 11.8 0.7 110 9.6 0.7 120 9.5 0.9 130 9.0 0.7 140 7.9 0.6 150 4.1 0.5 160 1.4 0.5 165 -0.4 0.6