Solar wind heavy ion abundances

During periods in 1969-1971, when interplanetary flow conditions were quiet, 17 determinations of the solar wind Fe and Si abundances and 7 of the O abundance were made. On the average, = 5.3 x 10 super(-) super(5) , = 7.6 x 10 super(-) super(5) , and = 5.2 x 10 super(-) super(4) . Variations from the averages over a total range of factors of similar to 4 for O, similar to 4 for Si, and similar to 10 for Fe were observed. Although Fe and Si abundance variations appear to be correlated, no other element correlation pairs are unambiguously discernible from the present data set.