The readme file for this data is the following:
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A Licor 1800 Spectroradiometer with an 8 nm bandwidth 
was used to measure spectrally resolved solar irradiance 
between 300 and 850 nm  from DOY 321 to DOY 345.   
The Spectroradiometer was placed on the top of a sampling 
van near the stern of the DISCOVERER  with a fairly clean 
view of the sky,  only rarely was the spectroradiometer  
shaded by a crane or the stern mast of the ship

Every 15 minutes during daylight hours, five spectral scans 
were made and averaged into one spectrum containing data 
at 2 nm intervals that was stored in the data record.   

The Licor Spectroradiometer was calibrated during the 
Hobart inport (Nov. 15-19, 95) using a Licor calibrator that 
contained a calibrated lamp and highly controlled power 
source.

The data are available in two formats,  ascii  (.csv) and excel 
(.xls) files.   In Excel format, ts_spec1.xls contains a time 
series of each wavelength from 300 to 598 nm and the file 
ts_spec2.xls contains a parallel time series for each 
wavelength from 600 to 850 nm.   The first column in each 
file is the decimal Day of Year, (GMT) and the first row 
contains the column headers w300, w302......  which are the 
wavelengths in nm.  The spectrally resolved downward 
irradiance is in units of watts/meter^2/nm.

The files ts_spec1.csv and ts_spec2.csv are similar the 
above Excel files except they are in ascii csv (comma 
separated value) format.
 
This data set is available on-line for download.  Publications 
that make general use of these  data are requested to acknowledge
James Johnson for providing the data.  Co-authorship is requested 
for significant use of these data in a publication.

-----------End of Spectroradiometer Readme file--------------