This research was supported by the National Aeronautics and Space Administration under research grant NAG5-3171. F.R. Fenrich thanks the Natural Sciences and Engineering Research Council of Canada for their support. The authors also thank K. Ogilvie for the Solar Wind Experiment key parameters, R. Lepping for the WIND Magnetic Fields Investigation key parameters, and WDC-C2 Kyoto for the provisional Dst measurements.
© 1998 AGU