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We have used 4752 days of data collected by the Birmingham Solar-OscillationsNetwork (BiSON) to determine very precise oscillation frequencies of acousticlow-degree modes that probe the solar core. We compare the fine (smallfrequency) spacings and frequency separation ratios formed from these data withthose of different solar models. We find that models constructed with lowmetallicity are incompatible with the observations. The results provide strongsupport for lowering the theoretical uncertainties on the neutrino fluxes.These uncertainties had recently been raised due to the controversy over thesolar abundances.Comment: To appear in Ap

Solar Abundances and Helioseismology: Fine‐Structure Spacings and Separation Ratios of Low‐Degreep‐Modes