kenjikry@crsgm1.crinoue.phy.saitama-u.ac.jp

¹ Department of Physics, Saitama University, Saitama 338-8570, Japan
² Department of Physics, Kinki University, Osaka 577-8502, Japan
³ Institute for Cosmic Ray Research, University of Tokyo, Chiba 277-8582, Japan
⁴ Faculty of Engineering, Yamanashi University, Kofu 400-8511, Japan
⁵ Faculty of Engineering, Musashi Institute of Technology, Tokyo 158-8557, Japan
⁶ Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
⁷ Nishina Memorial Foundation, Komagome, Tokyo 113-0021, Japan
⁸ Faculty of Science and Technology, Hirosaki University, Hirosaki 036-8561, Japan
⁹ Department of Physics, Osaka City University, Osaka 558-8585, Japan
¹⁰ RIKEN (The Institute of Physical and Chemical Research), Saitama 351-0198, Japan
¹¹ Faculty of Education, Yamanashi University, Kofu 400-8510, Japan
¹² Department of Physics, Ehime University, Matsuyama 790-8577, Japan
¹³ Department of Space Communication Engineering, Fukui University of Technology, Fukui 910-8505, Japan
¹⁴ Communications Research Laboratory, Tokyo 184-8795, Japan
¹⁵ National Institute of Radiological Sciences, Chiba 263-8555, Japan
¹⁶ Departmento de Física de Partículas, Universidad de Santiago, Santiago de Compostela 15706, Spain
¹⁷ Center for Cosmological Physics, University of Chicago, Chicago, IL 60637
¹⁸ Department of Physics, Chiba University, Chiba 263-8522, Japan