Affiliation: | 1Mount John University Observatory and Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand; 2Science Faculty, University of Auckland, Private Bag 92019, Auckland, New Zealand; 3Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya 464, Japan; 4Institute of Cosmic Ray Research, University of Tokyo, Tanashi, Tokyo 188, Japan; 5Tohoku University Astronomical Institute, Sendai 980, Japan; 6Carter National Observatory, PO Box 2909, Wellington, New Zealand; 7School of Chemical and Physical Sciences, Victoria University of Wellington, PO Box 600, Wellington, New Zealand |