File: P11TRD_30M_FMT.txt                         Version: NSSDC 11/15/2001 JFC
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INTERPLANETARY COSMIC RAY COUNTING RATES FROM THE PIONEER 11 TRAPPED RADIATION
DETECTOR (TRD) EXPERIMENT - 30 MIN. AVERAGED HOMOGENEOUS SUMMARY DATA

Principal Investigator: Dr. Walker Filius
                        University of California - San Diego
                        La Jolla, California

Description: The full TRD 30-min. homogeneous summary data set is currently kept 
off-line in the NSSDC magnetic tape archive (NSSDC ID # 73-019A-05H) and can be 
ordered by e-mail to the NSSDC Coordinated Request User Support Office (CRUSO) 
at request@nssdca.gsfc.nasa.gov. The documentation in Standard Formatted Data
Unit (SFDU) files (*.sfdu) and sample data for 1990 and onward are available
in the present directory. Hour averages of selected cosmic ray counting rates
from these data may be found in the HOUR directory; these hourly data files
were produced using the READTRD.for FORTRAN code. Note that all data files
originally having *.DAT extensions have been changed here to *.asc.

Related Information and Data:

Further details on the spacecraft, experiment, data sets at NSSDC, and related
WWW sites can be found on the Pioneer 10/11 flight project page under

http://nssdc.gsfc.nasa.gov/space/

Hour averages of the interplanetary solar wind data from, and hourly heliocentric
coordinates of, Pioneer 10/11 and other interplanetary spacecraft may be also
be accessed and plotted on-line through the COHOWeb service based at the same
WWW site as above.

Acknowledgement:

Use of these data in publications should be accompanied at minimum by
acknowledgements of the National Space Science Data Center and the responsible
Principal Investigator defined in the experiment documentation provided here.