(a) Time series of electron fluxes measured by ICARE_NG² aboard HB13G and NGRM aboard EDRS-C. For each missions two energies are considered: 600 keV and 1.2 MeV for NGRM and 650 keV and 1.3 MeV for ICARE_NG². These energies have been chosen close enough between the two instruments to be directly comparable. (b) Comparison of electron integral fluxes given by ICARE_NG² and NGRM instruments as a function of incident electron energies. The same time slot as (a) is used and averaged for each available energy. The orange solid line corresponds to the transformation of FEDO to FEIO provided by NGRM.