USGS Digital Spectral Library splib06a
Clark and others 2007, USGS, Data Series 231.

For further information on spectrsocopy, see: http://speclab.cr.usgs.gov

ASCII Spectral Data file contents:
line 15 title
line 16 history
line 17 to end:  3-columns of data:
     wavelength    reflectance    standard deviation

(standard deviation of 0.000000 means not measured)
(      -1.23e34  indicates a deleted number)
----------------------------------------------------
Chert ANP90-6D (White)       W1R1B? AREF
copy of splib05a r 1635                                     
       0.205100      -1.23e34        0.000000
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