Fig. 50.

Yearly averages of the quiet-time suprathermal a Fe and CNO spectral indices, $\mathit{\gamma }$, given by fitting a power-law of the form $j=j_0{E}^{-\mathit{\gamma }}$ to the measured differential intensities j at energy E; E is in MeV/nucleon, b C/O ratio, c Fe/CNO ratio, and d ${}^3$He/${}^4$He ratio measured by the Wind/STEP and ACE/ULEIS from 1995–2009 (adapted from Desai et al. 2006b; Dayeh et al. 2009)