Refractive indices n (top) and k (middle & bottom) of PAMPRE and COSmIC Titan haze analogs from UV to far-IR. Both the Titan 1 and Titan 2 analogs produced from different gas relative abundances N₂/CH₄ (see Table 1) are shown. The refractive indices of Khare et al. (1984) obtained for a Titan analog with an initial gas composition similar to our Titan 1 analog are also plotted for comparison. The attribution of IR resonances is shown on the bottom panel.