1. Introduction
This analysis was carried out for the purpose of development of criteria for forecasting of solar flares and its
application for the observation periods choice for period of operating the space experiment (SE) GRIS-FKI-1
onboard the Service Module "Zvezda" in the Russian Segment of the International Space Station. Information about
this experiment is presented on TSNIIMASH web site[1].
Space experiment is intended for research of active non-stationary processes on the Sun, physical mechanisms
and conditions of acceleration of electrons, protons and nucleus on various phases of solar flares progress. The
scientific equipment, described in [2],is designed to measure fluxes and power spectra of gamma and hard x-ray