Fig. 2.

Wavelength-dependent transmission through Titan’s atmosphere from the 27° N occultation. The vertical axis is the ray’s altitude of closest approach, where an altitude of 0 corresponds to the planetary surface, at a radius of $R_p=2,575\hspace{0.17em}\mathrm{km}$. Darker shades indicate lower transmission, and noise can be seen at transmission values very near to 1 and at wavelengths beyond about 4.5 μm.