#DISTRIBUTEDBY=Aerosol Refractive Index Archive (www.atm.ox.ac.uk/project/RI/)
#DESCRIPTION=Ground sample collected in Boulder Colorado.
#SUBSTANCE=Mt. St. Helens ash May 18 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
      0.31922762    0.0077599902
      0.33948936    0.0058800001
      0.35269924    0.0048871199
      0.40217827    0.0046874001
      0.43445557    0.0045909402
      0.46904549    0.0045344699
      0.51587632    0.0044415500
      0.52250692    0.0044231201
      0.55777647    0.0042599398
      0.59699169    0.0041899998
