Influence of the neutral sheet on the Swinson's type north-south anisotropy of cosmic rays

The relations between the north-south anisotropy of cosmic rays and/or nucleonic intensity variation and the latitudinal angular distance (lambda) of the Earth from the neutral sheet is examined using the data in the period from Apr. 1976 to Aug. 1977 at the solar minimum. It is found that the nucleonic intensity variation of the cosmic rays has no correlation with sin lambda in this period as shown in a correlation diagram; but the amplitude of the north-south anisotropy is fairly correlated with sin lambda as shown in another diagram.