Realistic calculations of solar-neutrino oscillations

We reexamine the possible effects of oscillations on the apparent solar-neutrino flux, integrated over the theoretical solar spectrum weighted by the ${}_{}{}^{37}{}_{}{}^{}\mathrm{Cl}$ or ${}_{}{}^{71}{}_{}{}^{}\mathrm{Ga}$ neutrino capture cross section. Spectral, thermal, and distance averaging do not reduce all oscillations to their mean values. The averaged ${\nu }_e\to {\nu }_e$ transition probability can fall as low as 0.1. Annual variations are evaluated.