File: AAREADME.TXT                 Version: NSSDC 11/15/2001 JFC
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Hourly Average Solar Wind Plasma Data from Helios 2: 1976 - 1980

Principal Investigator:

   Dr. Helmut R. Rosenbauer
   Max-Planck-Institut fur Aeronomie
   Postfach 20
   37191 Katlenburg
   Germany
   Internet: ROSENBAUER@LINMPI.DNET.GWDG.DE
   DECnet:   ECD1::LINMPI::ROSENBAUER

Data Contact: 

   Dr. Rainer Schwenn
   Max-Planck-Institut fur Aeronomie
   Postfach 20
   37191 Katlenburg
   Germany
   Internet: SCHWENN@LINAX1.MPAE.GWDG.DE
   DECnet: ECD1::LINMPI::SCHWENN

Description: 

This directory group includes hourly average solar wind plasma data from 
the plasma analyzer experiment on the Helios 2 spacecraft. The data have 
been extracted into ASCII format from a merged solar wind magnetic field 
and plasma data set compiled at NSSDC by Prof. J. W. Freeman of Rice 
University. See file HE2PLAHR_FMT in subdirectory HOUR for further details 
on the data set and format. The file HE2PLAHR_NMC gives a brief description 
of the experiment based on information in the NSSDC Master Catalog. The 
plasma experiment Principal Investigator, H. R. Rosenbauer, or R. Schwenn, 
may be contacted directly (see addresses above) regarding potential 
availability of other data from this experiment. 

Related Information and Data:

Further details on the spacecraft, experiment, data sets at NSSDC, and 
related WWW sites can be found on the Helios 1/2 flight project page:

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

Hour averages of the interplanetary solar wind data from, and hourly 
heliocentric coordinates of, Helios 1/2 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.