Cohoweb Data Explorer - Near-Earth Heliosphere Data - NSSDC - Goddard Space Flight Center
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Interface to produce listings/plots with filtering

This page provides the ability to list/plot (or create a file of) any selection of the Voyager1 parameters listed below, only for hours when these and/or other parameters satisfy user-specified numeric ranges. Optional: click left boxes to select output parameters, and enter desired minimum and/or maximum value(s) in box(es) to the right of any desired "filtering" parameter(s).

Note: Voyager magnetometer data past 1989 must be used very carefully due to the very low magnetic field values being measured as compared to the pre-launch magnetometer accuracy requirements. Please click here for details.

*Select an activity

List data   Create file   Plot filtered data

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

* Select variable
Variable Name Min/Max values (Optional):
Low    High  
Position in HGI
Heliocentric Distance, AU   
HelioGraphic Inertial (HGI) Latitude, deg.   
HGI Longitude, deg.   
Magnetic field, RTN
IMF B Field Magnitude (Scalar), nT   
IMF BR in RTN(Radial-Tangential-Normal), nT   
IMF BT, nT (RTN)   
IMF BN, nT (RTN)   
Plasma, (RTN)
Proton Flow Speed, km/sec   
Proton Flow Elevation Angle/Latitude, deg.   
Proton Flow Azimuth Angle/Longitude, deg.   
Proton Density, n/cc   
Proton Temperature, K   
LECP Proton fluxes (1/(sec-cm**2-ster-MeV)
0.57-1.78 MeV   
3.40-17.6 MeV   
22.0-31.0 MeV   
6-hr CRS Proton fluxes (1/(sec-cm**2-ster-MeV)
3.000-4.600 MeV   
4.600-6.200 MeV   
6.200-7.700 MeV   
7.700-12.800 MeV   
12.800-17.900 MeV   
17.900-30.000 MeV   
30.000-48.000 MeV   
48.000-56.000 MeV   
74.471-83.661 MeV   
132.834-154.911 MeV   
154.911-174.866 MeV   
174.866-187.713 MeV   
187.713-220.475 MeV   
220.475-270.050 MeV   
270.050-346.034 MeV   

*Advanced plot selections (optional)
Y-axis Scale:
Character size(0.5-2.0): Symbol Size(0.1-4.0):
Plot Symbol: Image size (pixels) X: Y:


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

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