Altitude [km] Extinction [1/km] Dust/Water Ice 17.38 3.5505e-03 I 23.51 3.9052e-03 I 29.64 3.3202e-04 I 35.61 3.6650e-04 I 70.83 1.1978e-05 D 77.76 1.3280e-05 D