  We analyze the lowest spectral moments of the left-right two-point
correlation function, using all known short-distance constraints and the
recently updated ALEPH V-A spectral function from tau decays. This information
is used to determine the low-energy couplings L10 and C87 of chiral
perturbation theory and the lowest-dimensional contributions to the Operator
Product Expansion of the left-right correlator. A detailed statistical analysis
is implemented to assess the theoretical uncertainties, including violations of
quark-hadron duality.
