Cohoweb Data Explorer - Near-Earth Heliosphere Data - NSSDC - Goddard Space Flight Center
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Interface to produce averages, standard deviations and, if desired, distribution functions for STEREO-B.


This page provides the ability to produce averages, standard deviations and distribution functions for any one of 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)  
    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.   
Magnetic field in RTN(Radial-Tangential-Normal)
IMF BR, nT   
IMF BT, nT   
IMF BN, nT   
IMF B Field Magnitude (Scalar), nT   
Plasma in RTN (Radial-Tangential-Normal) coordinate system
Proton Flow Speed, km/sec   
Proton Flow Elevation Angle/Latitude, deg.   
Proton Flow Azimuth Angle/Longitude, deg.   
Proton Density, n/cc   
Proton Temperature, K   
LET Proton fluxes (1/(sec-cm**2-ster-MeV
1.8-3.6 Mev   
4.0-6.0 Mev   
6.0-10.0 Mev   
10.0-12.0 Mev   
HET Proton fluxes (1/(sec-cm**2-ster-MeV
13.6-15.1 MeV   
14.9-17.1 MeV   
17.0-19.3 MeV   
20.8-23.8 MeV   
23.8-26.4 MeV   
26.3-29.7 MeV   
29.5-33.4 MeV   
33.4-35.8 MeV   
35.5-40.5 MeV   
40.0-60.0 MeV   
60.0-100.0 MeV   
SIT Proton fluxes (1/(sec-cm**2-ster-MeV
0.320 - 0.452 MeV   
0.452 - 0.640 MeV   
0.640 - 0.905 MeV   
0.905 - 1.280 MeV   
1.280 - 1.810 MeV   
1.810 - 2.560 MeV   
2.560 - 3.620 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:


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