Cohoweb Data Explorer - Near-Earth Heliosphere Data - NSSDC - Goddard Space Flight Center
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Interface to produce plots, listings, output files for Parker Solar Probe(PSP)

This page provides the ability to plot or list (or create a file) of any selection of the parameters listed below.

COHO hourly and daily PSP data were made using PSP high res data from from CDAWeb
1. The name of plasma data - 'PSP_SWP_SPC_L3I',  parameters name -
     Proton bulk velocity, from 1-dimensional Maxwellian fitting, in the [inertial] RTN frame (Only Good Quality)
     [Total] proton density, from 1-dimensional Maxwellian fitting. (Only Good Quality)
     Proton radial [most probable] thermal speed component, from 1-dimensional Maxwellian fitting. (Only Good Quality)
         Note: Thermal speed was converted into Proton Temperature
2. The name mag data: 'PSP_FLD_L2_MAG_RTN_1MIN'

3. Trajectory data were taken from HelioWeb

*Select an activity

Plot data List data Create file

*Select resolution
     Hourly averaged Daily averaged

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

* Select variable
Position in HGI
Heliocentric Distance, AU
HelioGraphic Inertial (HGI) Latitude, deg.
HGI Longitude, deg.
Magnetic field in RTN (Radial-Tangential-Normal) coordinate system
Magnitude, Avg IMF Vr, nT (vector)
Plasma in RTN (Radial-Tangential-Normal) coordinate system
Proton VR, km/sec
Proton VT, km/sec
Proton VN, km/sec
Proton Flow Speed, km/sec
Proton Flow Elevation Angle/Latitude, deg.
Proton Flow Azimuth Angle/Longitude, deg.
Proton Density, n/cc
Proton Temperature, K

*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