The magnitude of the strong flow of 1.79--2.15 MeV protons away from the Jovian magnetic equator is used to estimate the residence lifetimes of these protons in the equatorial source region. The lifetime is approximately 1.2¿105/(R--5.8)2 s, where R is distance in Jovian radii from Jupiter's center to the equatorial region of interest. At Europa an Ganymede (but not at Io) this lifetime is 1-2 orders of magnitude shorter than sweepup lifetimes by the moons. The fluxes of these protons, integrated over the observed range from 6 to 40 Jovian radii, amount to 3¿1023 particles per second, per degree of longitude and carry away about 9¿1017 ergs per second per degree.