Angle Polarisation (%) (deg.) 100 150 200 250 300 350 400 450 500 550 micromètres 25.0 3.0 3.6 4.2 4.7 5.3 5.8 6.3 6.8 7.3 7.8 35.0 4.0 4.9 5.7 6.5 7.2 8.0 8.7 9.5 10.2 10.9 50.0 5.0 6.5 7.7 8.9 10.0 10.9 11.8 12.5 13.2 13.8 65.0 7.2 9.2 10.7 12.0 13.0 13.8 14.5 15.1 15.5 15.9 80.0 8.9 11.5 13.7 15.4 16.7 17.8 18.6 19.3 19.8 20.3 100.0 9.0 11.9 14.0 15.6 16.7 17.5 18.2 18.6 18.9 19.2 115.0 9.5 11.1 12.4 13.4 14.1 14.7 15.2 15.5 15.8 16.0 130.0 8.0 9.9 11.2 12.0 12.6 13.0 13.2 13.4 13.5 13.6 145.0 6.6 7.3 8.0 8.6 9.1 9.6 10.0 10.4 10.7 11.0 160.0 4.7 5.1 5.5 5.9 6.2 6.6 7.0 7.4 7.8 8.1