1. Graduate School of Engineering Kyushu Institute of Technology Kitakusyu Japan
2. Institute for Space‐Earth Environmental Research, Nagoya University Nagoya Japan
3. Data Analysis Center for Geomagnetism and Space Magnetism, Graduate School of Science Kyoto University Kyoto Japan
4. Graduate School of Natural Science and Technology Kanazawa University Kanazawa Japan
5. Department of Geophysics Graduate School of Science, Tohoku University Sendai Japan
6. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency Sagamihara Japan