Dynamics of electron population in the outer radiation belt of the Earth (ERB) during magnetic storms and during quiet time have been studied practically from the beginning of cosmic era. The relativistic electron flux decreases during the main phase of the storm, and then recovers and increases from late main phase to the recovery phase. For the of time period from April to May, 2005 we have the opportunity to study ERB electron variations both in magnetically quiet time (April) and during and after strong magnetic storm ( May). Using data from two low-altitude satellites - CORONAS-F and Universitetskiy-Tatyana we have measured the fluxes and energy spectra of solar electrons 0.3-12 MeV and protons 1-90 MeV (CORONAS-F), 0.07-0.9 keV electrons and 2-100 MeV protons ( Universitetskiy-Tatyana ). CORONAS-F (started on July, 30th, 2001 into a circular polar orbit, in 2005 the height was significantly lower, about 350 km, an inclination of 82.5 degrees) and Universitetskiy-Tatyana the first Space Scientific and Education mikrosatellite of the Lomonosov Moscow State University (started on January, 20th, 2005 into a circular polar orbit - 950 km, an inclination of 83 degrees.