File: P10CRT6H_FMT.txt                      Version: NSSDC 11/15/2001 JFC
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Pioneer 10 Cosmic Ray Telescope Six-Hour Average Interplanetary
Counting Rates and Fluxes

Data Set Dates: 1972-03-03 to 1994-12-31

NSSDC Data Set ID: 72-012A-12C

Data Set Contact: Dr. Nand Lal
                Code 672
                NASA Goddard Space Flight Center
                Greenbelt, MD 20771                                             
Internet: nand.lal@nasa.gov                             Phone: 301-286-7350

Experiment: Pioneer 10 Cosmic Ray Telescope (CRT)

Principal Investigator: Prof. Frank B. McDonald
                      Institute for Physical Science and Technology
                      University of Maryland, College Park, MD

*********
Material between the *******'s was added in 2008 by Joe King.
The 6-hour averages were originally provided by the PI team
in 6-month files having no end of record marks after each
6-hour record.  These files were originally in this directory.
These files were ingested by NSSDC's DIOnAS process to produce
the 6-month files in the subdirectory
https://spdf.gsfc.nasa.gov/pub/data/pioneer/pioneer10/particle/
crt/ip_6hour_ascii/data/
These latter files have been verified by Nand Lal to have the same data
values as the input data, and they have end-or-record markers, but the
end-of-record markers are not uniform.  A yet later version of the data
set having annual files and uniform end-of-record markers (i.e., LF) was
created in 2008.  These files have replaced the original PI-provided
6-month files originally in this directory.  The documentation files at
P10CRT_VOLDESC.sfdu and P10CRT_FORMAT.sfdu, originally
created to support the PI-provided version, have been updated to reflect
the new annual files.

**********

Description: see P10CRT_VOLDESC.sfdu and P10CRT_FORMAT.sfdu files in this
directory for comprehensive data set, format, and experiment documentation
in SFDU (Standard Formatted Data Unit) format. Data file extensions have
been changed here to *.ascii

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/nmc/spacecraftDisplay.do?id=1972-012A

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.