Differential flux dN/dEA distribution with the cosmic ray energy per nucleon EA for some of the cosmic ray elements (hydrogen, helium, oxygen, and iron) (Webber & Yushak 1983; Shen et al. 2004). The dotted lines are the values given by GALPROP (http://galprop.stanford.edu/webrun/, Vladimirov et al. 2011).
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