https://spdf.gsfc.nasa.gov/pub/data/imp/imp8/particles_gsfc/
          00readme.txt 

30-min flux data from the GSFC/GME experiment are accessible
from CDAWeb at http://cdaweb.gsfc.nasa.gov/cdaweb/sp_phys/
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Related data and directories:
SPDF Data and Orbits Services <http://spdf.gsfc.nasa.gov/>
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SPDF Contact: Natalia Papitashvili <Natalia.E.Papitashvili.1@nasa.gov>,
 
Please acknowledge NASA's  Space Physics Data Facility for data usage.

Authorizing NASA Official: Dr. R.E. McGuire, Head, SPDF, NASA Goddard Space Flight Center
                        301-286-7794, e-mail:  Robert.E.McGuire@nasa.gov
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