Affiliation: | 1. Department of Earth and Life Sciences, College of Integrated Arts and Sciences, Osaka Prefecture University, 1-1 Gakuen-Cho, Sakai-Cily, Osaka, 599-8531, Japan 2. Nobeyama Radio Observatory, Japan 3. Instrument Development Center of School of Science, Nagoya University, Japan 4. Toyota National College of Technology, Japan 5. Solar-Terrestrial Environment Laboratory, Nagoya University, Japan
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