The Galileo star scanner is providing data on the instantaneous
flux of 1.5 to 30 MeV electrons in the Jovian environment. It is
able to measure fluxes of ~1 x 105 electrons cm-2 sec-1 or greater
which generally means the data are usable inside of about 12 and
rarely as far out as 16.5 Jovian Radii (RJ).