#DISTRIBUTEDBY=Aerosol Refractive Index Archive (www.atm.ox.ac.uk/project/RI/)
#DESCRIPTION=Sample collected from stratosphere 15km away on 20 May 1980.
#SUBSTANCE=Mt. St. Helens ash 18 May 1980 eruption
#SAMPLEFORM=Solid
#TEMPERATURE=
#CONCENTRATION=
#DOI=10.1126/science.211.4484.836
#REFERENCE= E. Patterson, measurement of the imaginary refractive index
##between 300 and 700nm of Mount St. Helens ash, Science, 211, 1981
#CONTACT=
#COMMENT=Digitised from publication graph, absolute accuracy is unknown.
#FORMAT=WAVL K
      0.30085175    0.0071030902
      0.31999970    0.0047843000
      0.34967812    0.0035800100
      0.40172131    0.0020904799
      0.50318598    0.0019890000
      0.60080436    0.0015927000
      0.70116208    0.0012024400
