Spectrum Vis-NIR reflectance spectrum of 0.54% PAHs mixed with CO2 snow - t=0 Spectrum Vis-NIR reflectance spectrum of 0.54% PAHs mixed with CO2 snow - t=4h Spectrum Vis-NIR reflectance spectrum of 0.54% PAHs mixed with CO2 snow - t=7h40 Spectrum Vis-NIR reflectance spectrum of 0.54% PAHs mixed with CO2 snow - t=8h50 Spectrum Vis-NIR reflectance spectrum of 0.54% PAHs mixed with CO2 snow - t=9h45 Spectrum Vis-NIR reflectance spectrum of 0.54% PAHs mixed with H2O frost - t=10h55 Spectrum Vis-NIR reflectance spectrum of 0.54% PAHs mixed with H2O frost - t=19h