¹ Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan
² Research Center for Cosmic Neutrinos, Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
³ Department of Physics, Boston University, Boston, MA 02215
⁴ Current address: Center for Gravitational Wave Physics, Pennsylvania State University, University Park, PA 16802
⁵ Physics Department, Brookhaven National Laboratory, Upton, NY 11973
⁶ Department of Physics and Astronomy, University of California, Irvine, CA 92697-4575
⁷ Department of Physics, California State University, Dominguez Hills, Carson, CA 90747
⁸ Department of Physics, Chonnam National University, Kwangju 500-757, South Korea
⁹ Department of Physics, Duke University, Durham, NC 27708
¹⁰ Department of Physics, George Mason University, Fairfax, VA 22030
¹¹ Department of Physics, Gifu University, Gifu, Gifu 501-1193, Japan
¹² Department of Physics and Astronomy, University of Hawaii, Honolulu, HI 96822
¹³ Department of Physics, Indiana University, Bloomington, IN 47405-7105
¹⁴ High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
¹⁵ Current address: Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba 277-8582, Japan
¹⁶ Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
¹⁷ Department of Physics, Kyoto University, Kyoto 606-8502, Japan
¹⁸ Current address: Tri-University Meson Facility (TRIUMF), Vancouver, BC V6T 2A3, Canada
¹⁹ Physics Division, P-23, Los Alamos National Laboratory, Los Alamos, NM 87544
²⁰ Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803
²¹ Department of Physics, University of Maryland, College Park, MD 20742
²² Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139
²³ Department of Physics, University of Minnesota, Duluth, MN 55812-2496
²⁴ Department of Physics, Miyagi University of Education, Sendai, Miyagi 980-0845, Japan
²⁵ Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
²⁶ Department of Physics and Astronomy, State University of New York, Stony Brook, NY 11794-3800
²⁷ Department of Physics, Niigata University, Niigata, Niigata 950-2181, Japan
²⁸ Department of Physics, Okayama University, Okayama, Okayama 700-8530, Japan
²⁹ Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
³⁰ Department of Physics, Seoul National University, Seoul 151-742, South Korea
³¹ Department of Systems Engineering, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
³² Department of Informatics in Social Welfare, Shizuoka University of Welfare, Yaizu, Shizuoka 425-8611, Japan
³³ Department of Physics, Sungkyunkwan University, Suwon 440-746, South Korea
³⁴ Research Center for Neutrino Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
³⁵ Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
³⁶ Department of Physics, Tokyo Institute for Technology, Meguro, Tokyo 152-8551, Japan
³⁷ University of Tokyo, Tokyo 113-0033, Japan
³⁸ Institute of Experimental Physics, Warsaw University, 00-681 Warsaw, Poland
³⁹ Department of Physics, University of Washington, Seattle, WA 98195-1560