#DISTRIBUTEDBY=Aerosol Refractive Index Archive (www.atm.ox.ac.uk/project/RI/)
#DESCRIPTION=Sample collected from stratosphere 18km away on 21 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
      0.30029775     0.016892800
      0.31950461     0.012639600
      0.34896875    0.0064776302
      0.40154753    0.0038628799
      0.50196709    0.0034944599
      0.60043081    0.0021022400
      0.70124696    0.0013931300
