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The PGH rate consists of greater than 70 MeV/nuc nuclei, primarily protons, and is a good indicator of the level of modulation of galactic cosmic rays. It can also respond to large solar flares.
For a list of excluded times please see Excluded Times for Voyager-1.
Postscript and PDF versions are available through the links under each figure.
 Voyager-1 PGH Rate (3 months) |
 Voyager-1 PGH Rate (12 months) |