SWICS/ACE data product provided by G. Gloeckler (gg10@umail.umd.edu) Daily averages of the phase space density of He+ in the speed range W=(He+ speed)/(solar wind speed) between 1.4 and 2. (see Gloeckler et al., Observations of the helium focusing cone with pickup ions, Astronomy and Astrophysics, Nov 2004 for details.) Yr DOY98 DOY.frac He+(1.4