The extensive database of plasma measurements from Los Alamos geosynchronous satellites is used to derive a statistical characterization of the geosynchronous fluxes of ions and electrons between the energies of ~40 eV and ~45 keV. The database covers more than an entire solar cycle and all levels of geomagnetic activity. The derived flux averages and various percentile levels thus describe the environment to which geosynchronous satellites are exposed over their lifetimes and should provide a useful tool to guide satellite design and testing. The mission-averaged fluxes agree very well with other recent analyses in the energy ranges of overlap.