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

Interface to produce listings/plots with filtering

This page provides the ability to list (or create a file of) any selection of the OMNI_M parameters listed below, only for hours when these and/or other parameters satisfy user-specified numeric ranges. 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).

*Select an activity

List data    Create file   Plot filtered data

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

* Select variable
Variable Name Format Min/Max values:
Low    High
HelioGraphic Inertial (HGI) Latitude, deg. F6.1   
HGI Longitude, deg. F6.1   
BR in RTN (Radial-Tangential-Normal), nT F5.1   
IMF BT, nT (RTN) F5.1   
IMF BN, nT (RTN) F5.1   
B Field Magnitude (Scalar), nT F5.1   
Proton Flow Speed, km/sec F5.0   
Proton Flow Latitude (RTN), deg. F5.1   
Proton Flow Longitude (RTN), deg. F5.1   
Proton Density, n/cc F5.1   
Proton Temperature, K F8.0   

*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