*Paul Prikryl^1,2、Koki Iwao³、Takumi Tsukijihara⁴、Donald B. Muldrew⁵、Vojto Rušin⁶、Milan Rybanský⁷、Robert Bruntz⁸ (1.Geomagnetic Laboratory, Natural Resources Canada, Ottawa, ON, Canada、2.Physics Department, University of New Brunswick, Fredericton, NB, Canada、3.National College of Technology, Kumamoto College, Yatsushiro, Japan、4.Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan、5.Emeritus, Communications Research Centre, Ottawa, ON, Canada、6.Astronomical Institute, Slovak Academy of Sciences, Tatranská Lomnica, Slovakia、7.Slovak Central Observatory, Hurbanovo, Slovakia、8.Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA)