1. Department of Physics and Astronomy; Dartmouth College; Hanover New Hampshire USA
2. Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
3. Space Sciences Laboratory; University of California; Berkeley California USA
4. Department of Physics and Astronomy; Siena College; Loudonville New York USA
5. Research Institute for Sustainable Humanosphere; Kyoto University; Gokasho, Uji Kyoto Japan