  We estimate with Monte Carlo the goodness of fit and the confidence level of
the standard allowed regions for the neutrino oscillation parameters obtained
from the fit of solar neutrino data. We calculate allowed regions with correct
frequentist coverage using the Crow-Gardner prescription of smallest acceptance
intervals. We present also the results of a calculation of Bayesian allowed
regions with a flat prior in the log(tan^2 theta)-log(Delta m^2) plane.
