  We present an update of the determination of the solar neutrino fluxes from a
global analysis of the solar and terrestrial neutrino data in the framework of
three-neutrino mixing. Using a Bayesian analysis we reconstruct the posterior
probability distribution function for the eight normalization parameters of the
solar neutrino fluxes plus the relevant masses and mixing, with and without
imposing the luminosity constraint. We then use these results to compare the
description provided by different Standard Solar Models. Our results show that,
at present, both models with low and high metallicity can describe the data
with equivalent statistical agreement. We also argue that even with the present
experimental precision the solar neutrino data have the potential to improve
the accuracy of the solar model predictions.
