Linear regressions between the CME speed and the logarithm of the SEP proton peak flux at several integral energy channels. The first column (stack of four plots) provides the regressions for the Halo CMEs (blue color). The second column shows the regressions for the Partial halo CMEs (red color) and the third column includes the regressions for the non halo CMEs (green color). For each column, from top to bottom the corresponding integral energy channels are E > 10 MeV, E > 30 MeV, E > 60 MeV and E > 100 MeV