OMNIWeb Plus Browser
Interface to produce plots, listings or output files
Pioneer 11 UCSD Trapped Radiation Detector Experiment (TRD): Hourly Averaged Interplanetary Cosmic Ray Data.

The annual ASCII files of this data set, and extensive documentation, may be accessed here

Time span: 1973-04-16 to 1991-08-31

Please enter your selections and then click on the Submit button.

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    Plot data List data Create file (file?)

Enter start and stop dates: year,month,day(YYYYMMDD) or year,day_of_year(YYYYDOY)
   Start time    Stop time

Select variables/parameters

TBR = Code for Telemetry Bit Rate [bits/second = 2**(3+TBR)]
TDF = Telemetry Data Format [A, A/D, B, B/D]. (Note: not for ploting option)
M3L = 80-300 MeV Protons (50%) and >80 MeV/n Z>1 Ions [counts/second]
M1L = >80 MeV/n Protons (90%) and Z>1 Ions [counts/second]
C1 = >480 MeV/n Protons (80%) and Z>1 Ions [counts/second]
C3 = >650 MeV/n Protons and Z>1 Ions (70%) [counts/second]
RAD = Radial distance of spacecraft from Sun [AU]

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

If you have any questions/comments about the OMNWeb Plus, 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