Fig. 14.
a Average heavy ion abundances at – in 64 large SEP events events relative to those measured in the fast and slow solar wind, normalized to oxygen and plotted versus M/Q (adapted from Desai et al. 2006a). b Average abundances measured in the slow solar wind divided by those measured in 40 large CME-related SEP events above , plotted versus the FIP of each element (adapted from Mewaldt et al. 2002)