Cormic Ray Intensity by Nor-Amberd and Moscow Neutron Monitors during Solar cycle 23.

Time dependence of monthly averaged omnidirectional cosmic ray fluxes at the maximum of the absorption curve in the atmosphere, Nmax, measured at the polar northen latitude (green curve), at the southern polar latitude (blue curve), and at the middle northern latitude (red curve). The figures near each curve show the values of geomagnetic cutoff rigidities Rc in GV.