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When the current solar cycle approached near minimum modulation in 1972, we found that during solar quiet times the low-energy cosmic-ray proton spectrum had a typically steep form, while the helium spectrum had evolved into a "flat" form not observed before, such that at low energies the ratio 4He/1H became > 1. This paper reports a further study of these spectra by comparing them with the spectra of several other cosmic-ray species, including SHe and B which are of known galactic origin. This comparison shows that, except for 4He, all the species have similar forms. The paper also reports the determination of solar modulation parameters (e.g., diffusion coefficient, size of the heliosphere) and a set of local interstellar spectral forms which result in a self-consistent fit of the 1973 spectra of electrons, protons, and heavier nuclei, except for 4He 0.1 GV). It is concluded that the excess 4He flux is due to an anomalous component which probably is related to the 1972-1973 N and O quiet-time anomalous components observed at < 20 MeV per nucleon. The paper includes a comparison of the 1H and 4He behavior in the phase4ag effect of the low-energy galactic cosmic-ray fluxes versus the Climax neutron monitor intensities. These studies have been based on measurements from the University of Chicago instruments on the satellites IMP 3, 4, 5, 7, and 8 covering the period 1965-1974. Subject headings: abundances, cosmic-ray - cosmic rays - solar system
García-Muñoz et al. (Sat,) studied this question.