#SUBSTANCE=Nisyros ash
#DESCRIPTION=Ash from Nisyros volcanic eruption
#REFERENCE=Ball, J. G. C., B. E. Reed, R. G. Grainger, D. M. Peters, T. A. Mather, and D. M. Pyle (2015), Measurements of the complex refractive index of volcanic ash at 450, 546.7, and 650 nm. J. Geophys. Res. Atmos., 120, 7747–7757.
#DOI=10.1002/2015JD023521
#FORMAT= WAVL N DN K DK
0.4500	1.520	0.01	0.000230	0.000061
0.5467	1.516	0.01	0.000325	0.000094
0.6500	1.515	0.01	0.000391	0.00014
