File: P11GTT_DIR.txt                           Version: NSSDC 11/15/2001 JFC
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PIONEER 11 GEIGER TUBE TELESCOPE (GTT) EXPERIMENT - HOURLY AVERAGE COUNTING
RATES

Principal Investigator: Prof. James A. Van Allen
                        Dept. of Physics and Astronomy
                        University of Iowa
                        Iowa City, IA


Description: This directory includes hour averages of selected interplanetary
cosmic ray counting rates in ASCII format from the Pioneer 11 Geiger Tube
Telescope (GTT) experiment. The hourly data in subdirectory HOUR were derived
from the full GTT 15-min. resolution data set in the NSSDC magnetic tape
archive; documentation are provided in SFDU (Standard Formatted Data Unit)
format in subdirectory 15_MIN for the experiment and the full data set. See
file P11GTT_1H_FMT.txt in the HOUR subdirectory for further details of the 
hourly data set. See file P11GTT_NMC.txt in this directory for the experiment 
description from the NSSDC Master Catalog. 

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.