Cohoweb Data Explorer - Near-Earth Heliosphere Data - NSSDC - Goddard Space Flight Center
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Interface to produce scatter plots and regression fits, or listings

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.

Click HERE for more on using this interface.

For Advanced Options: For Linear Regression Fits (LRF) and scatter plots for single lag (including zero lag) and
for LRF for series of lags, for auto- and cross-correlation HERE

*Select an activity

     Scatter plot data List data selected

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

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

* Select the fitting method
    No fitting     Delta-Y method(N<30000)

*Advanced plot selections (optional)
X-axes type: Y-axes type:
Character size(0.5-2.0):
Plot Symbol: Symbol Size(0.1-4.0):
Image size (pixels): X: Y: Connect Type:


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