Ps 6 magnetic variations are quasi-periodic perturbations of the auroral zone magnetic field found in the morning sector during periods of strong magnetosphere activity. The disturbance affects mainly the D and Z components of the perturbation field and amplitudes can reach several hundred nanoteslas. In this report we show that Ps 6 activity has a peak in occurrence frequency around magnetic local dawn and that there are significanly more Ps 6 variations detectable in the months around summer solstice than during the months around winter solstice. Our results suggest that the electric field configuration is the most crucial factor in the control of the generation of Ps 6 magnetic disturbances.