There are ten files in this directory, all of which are ASCII.
This file is the README file, whereas the rest are described below:

basis.functions - The mean and first seven basis vectors as computed from 
   the entire data set. Organized on a vector basis, 31 numbers per vector (in 
   the 400-700nm range, at 10nm intervals). The analysis used to obtain these
   vectors is presented in a paper entitled "The measurement and analysis of
   object reflectance spectra" which was submitted to the journal "COLOR 
   research and application".

dupont.spectra.2 - The reflectance spectra of 120 DuPont paint chips. 
   The DuPont paint chips are the Solid Color Selections of the Du Pont Color 
   Sampler from Du Pont Transportation products, and can be ordered from
   any Du Pont Refinish Sales Centers. Organized by chip order, 171 wavelengths
   per chip. Thus the first 171 numbers are the spectra for the 390-730nm range
   (in 2nm intervals) for chip #1, the next 171 numbers are the spectra for 
   chip #2, and so on.

dupont.spectra.10 - The reflectance spectra of 120 DuPont paint chips. 
   Organized by chip order, 31 wavelengths per chip. Thus the first 31 numbers
   are the spectra for the 400-700nm range (in 10nm intervals) for chip #1, the
   next 31 numbers are the spectra for chip #2, and so on. The data originated 
   from the 2nm spectra, by averaging 5 2nm readings into one 10nm entry.

munsell.description - The specification of the 64 Munsell chips in Munsell book
   notation. Chip descriptions preceded by "MCC" come from the Macbeth Color
   Checker chart.

munsell.spectra.2 - The reflectance spectra of 64 Munsell chips. Organized by
   chip order, 171 wavelengths per chip. Thus the first 171 numbers are the
   spectra for the 390-730nm range (in 2nm intervals) for chip #1, the next 171
   numbers are the spectra for chip #2, and so on.

munsell.spectra.10 - The reflectance spectra of 64 Munsell chips. Organized by
   chip order, 31 wavelengths per chip. Thus the first 31 numbers are the
   spectra for the 400-700nm range (in 10nm intervals) for chip #1, the next 31
   numbers are the spectra for chip #2, and so on. The data originated 
   from the 2nm spectra, by averaging 5 2nm readings into one 10nm entry.

objects.description - The actual description of the 170 materials measured in
   the database. The order corresponds to the order of the measurements in
   the "objects.spectra" file.

objects.spectra.2 - The reflectance spectra of 170 natural and man-made 
    objects. Organized by material order, 171 wavelengths per material. Thus 
    the first 171 numbers are the spectra for the 390-730nm range (in 2nm 
    intervals) for material #1, the next 171 numbers are the spectra for 
    material #2, and so on.

objects.spectra.10 - The reflectance spectra of 170 natural and man-made 
    objects. Organized by material order, 31 wavelengths per material. Thus 
    the first 31 numbers are the spectra for the 400-700nm range (in 10nm 
    intervals) for material #1, the next 31 numbers are the spectra for 
    material #2, and so on. The data originated from the 2nm spectra, by 
    averaging 5 2nm readings into one 10nm entry.