#SUBSTANCE=Eyjafjallajökull ash
#DESCRIPTION=Ash from Eyjafjallajökull volcanic eruption, sample taken on 15-16 May 2010
#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	1.561	0.01	0.000488	0.00047
0.5467	1.553	0.01	0.00108	0.00058
0.6500	1.554	0.01	0.000850	0.00069
