Cohoweb Data Explorer - Near-Earth Heliosphere Data - NSSDC - Goddard Space Flight Center
About COHOWeb Data FTP site COHOWeb News Feedback

Interface to produce averages, standard deviations and, if desired, distribution functions Helios2.

This page provides the ability to produce averages, standard deviations and distribution functions for any one of the Helios2 parameters listed below, only for hours when the value of this parameter and/or other parameters satisfy user-specified numeric ranges. Click on left side to specify the output parameter. Enter in the rightside boxes desired minimum and/or maximum value(s) of this and/or any other desired "filtering" parameter(s).

Click HERE for more on using this interface.

*Select an activity

     Get distribution function, etc. List data selected

*Enter start and stop dates (Use yyyyddd or yyyymmdd)  [19760101 - 19800304]
    Start      Stop   [Click here to get time spans for individual parameters.]     

* Select variable
Variable Name Min/Max values(Optional):
Low    High
Position in HGI
Heliocentric Distance, AU   
HelioGraphic Inertial (HGI) Latitude, deg.   
HGI Longitude, deg.   
Earth-Sun-Helios1 separation angle, deg.   
Magnetic field in RTN(Radial-Tangential-Normal)
IMF BR in RTN (Radial-Tangential-Normal), nT   
IMF BT, nT (RTN)   
IMF BN, nT (RTN)   
B Field Magnitude (Scalar), nT   
Plasma in RTN
Proton Flow Speed, km/sec   
Proton Flow Latitude, RTN, deg.   
Proton Flow Longitude, RTN, deg.   
Proton Density, n/cc   
Proton Temperature, K   
E6 Proton fluxes (1/(sec-cm**2-ster-MeV)
4-13 MeV   
13-27 MeV   
27-37 MeV   
37-51 MeV   
E7 Proton fluxes (1/(sec-cm**2-ster-MeV)
3.42-5.40 MeV   
6.40-11.95 MeV   
11.95-22.15 MeV   
24.59-28.74 MeV   
32.20-45.93 MeV   
45.93-57.56 MeV   
143.0-204.5 MeV   

* Specify bin size (width) in units natural to selected parameter
Note: Specify zero (0) to suppress the determination and display of a distribution function

*Advanced plot selections (optional)
Y-axes type: Character size(0.5-2.0):
DF units Image size (pixels): X: Y:


Logo If you have any questions/comments about COHOWEB system, contact:
Dr. Natalia Papitashvili,Mail Code 672, NASA/Goddard Space Flight Center, Greenbelt, MD 20771

NASA Official: Robert Candey (, Head of the Space Physics Data Facility