  We present a study of recent solar neutrino data using a Bayesian method.
Assuming that only $\nu_e$ are observed in the Super-Kamiokande experiment our
results show a marked supression of the survival probability at about 1 MeV, in
good agreement with $\chi ^2$-based analyses. When the detection of $\nu_{\mu}$
by Super-Kamiokande is taken into account, assuming $\nu_e$ to $\nu_{\mu}$
oscillations, we find the largest suppression in survival probability at about
8.5 MeV.
