1. Institute for Space‐Earth Environmental Research Nagoya University Nagoya Japan
2. Graduate School of Natural Science and Technology Kanazawa University Kanazawa Japan
3. Sodankylä Geophysical Observatory Finland
4. National Institute of Polar Research Tachikawa Japan
5. Ionospheric Physics Research Unit University of Oulu Oulu Finland
6. Athabasca University Observatories Athabasca University Athabasca Alberta Canada
7. Yu.G.Shafer Institute of Cosmophysical Research and Aeronomy of Siberian Branch of the Russian Academy of Sciences, Yakut Scientific Centre of Siberian Branch of the Russian Academy of Sciences Yakutsk Russia
8. Institute of Solar‐Terrestrial Physics, Siberian Branch of the Russian Academy of Sciences Irkutsk Russia