Proton (upper curve) and helium (lower curve) spectra in the range extending from 50 GeV/nuc to 100 TeV/nuc, for the propagation parameters of model A (see Table 2), giving the best fit to the PAMELA (Adriani et al. 2011) and CREAM (Ahn et al. 2010) data: supernovae explosion rate ν = 0.8century^-1. Solid lines show the total flux, short-dashed lines show the flux due to the sources of the catalog, and the long-dashed curve the flux due to the rest of the sources.