[1] INFN, Sez Catania, INFN CT, Via Santa Sofia 64, I-95123 Catania, Italy
[2] Univ Strasbourg, CNRS, IPHC, UMR 7178, F-67000 Strasbourg, France
[3] Aix Marseille Univ, CPPM, IN2P3, CNRS, Marseille, France
[4] Univ Sharjah, Sharjah Acad Astron Space Sci & Technol, Univ Campus,POB 27272, Sharjah, U Arab Emirates
[5] CSIC Univ Valencia, IFIC Inst Fis Corpuscular, C Catedratico Jose Beltran 2, Paterna 46980, Valencia, Spain
[6] Complesso Univ Monte S Angelo, INFN, Sez Napoli, Via Cintia Ed G, I-80126 Naples, Italy
[7] Univ Napoli Federico II, Complesso Univ Monte S Angelo, Dip Sci Fis E Pancini, Via Cintia Ed G, I-80126 Naples, Italy
[8] INFN, Sez Roma, Piazzale Aldo Moro 2, I-00185 Rome, Italy
[9] Univ Politecn Cataluna, Ctr Tecnol Vilanova I La Geltru, Lab Aplicac Bioacust, Avda Rambla Exposicio S N, Vilanova I La Geltru 08800, Spain
[10] NCSR Demokritos, Inst Nucl & Particle Phys, Ag Paraskevi Attikis, Athens 15310, Greece
[11] Univ Granada, CITIC, Dept Comp Architecture & Technol, Granada 18071, Spain
[12] Nantes Univ, Subatech, IMT Atlantique, IN2P3,CNRS, 4 Rue Alfred Kastler La Chantrerie,BP 20722, F-44307 Nantes, France
[13] Univ Politecn Valencia, Inst Invest Gest Integrada Zonas Costeras, C Paranimf 1, Gandia 46730, Spain
[14] Friedrich Alexander Univ Erlangen Nurnberg FAU, Erlangen Ctr Astroparticle Phys, Nikolaus Fiebiger Str 2, D-91058 Erlangen, Germany
[15] Univ Mohammed V Rabat, Fac Sci, 4 Av Ibn Battouta,BP 1014, Rabat 10000, Morocco
[16] Univ Paris Cite, CNRS, Astroparticule & Cosmol, F-75013 Paris, France
[17] INFN, Sez Genova, Via Dodecaneso 33, I-16146 Genoa, Italy
[18] Normandie Univ, LPC CAEN, ENSICAEN, UNICAEN,CNRS,IN2P3, 6 Blvd Marechal Juin, F-14050 Caen, France
[19] Czech Tech Univ, Inst Expt & Appl Phys, Husova 240-5, Prague 11000, Czech Republic
[20] Comenius Univ, Dept Nucl Phys & Biophys, Mlynska Dolina F1, Bratislava 84248, Slovakia
[21] Nikhef Natl Inst Subat Phys, POB 41882, NL-1009 DB Amsterdam, Netherlands
[22] INFN, Sez Bologna, 2 Vle C Berti Pichat 6-2, I-40127 Bologna, Italy
[23] Univ Bologna, Dipartimento Fis & Astron, Vle C Berti Pichat 6-2, I-40127 Bologna, Italy
[24] Univ Campania Luigi Vanvitelli, Dipartimento Matemat & Fis, Viale Lincoln 5, I-81100 Caserta, Italy
[25] Univ Hull, E A Milne Ctr Astrophys, Kingston Upon Hull HU6 7RX, N Humberside, England
[26] INFN, Lab Nazl Sud LNS, Via S Sofia 62, I-95123 Catania, Italy
[27] Northwest Univ, Ctr Space Res, Private Bag X6001, ZA-2520 Potchefstroom, South Africa
[28] Univ Mohammed 1, Fac Sci, BV Mohammed VI,BP 717, Oujda 60000, Morocco
[29] INFN, Grp Coll Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Italy
[30] Univ Salerno, Dipartimento Fis, Via Giovanni Paolo II 132, I-84084 Fisciano, Italy
[31] ISS, Atomistilor 409, Magurele 077125, Romania
[32] Univ Amsterdam, Inst Phys, IHEF, POB 94216, NL-1090 GE Amsterdam, Netherlands
[33] TNO, Tech Sci, POB 155, NL-2600 AD Delft, Netherlands
[34] Univ Roma La Sapienza, Dipartimento Fis, Piazzale Aldo Moro 2, I-00185 Rome, Italy
[35] Univ Bologna, Dipartimento Ingn Energia Elettr & Informaz Gugli, Via Univ 50, I-47521 Cesena, Italy
[36] Cadi Ayyad Univ, Phys Dept, Fac Sci Semlalia, Av My Abdellah,POB 2390, Marrakech 40000, Morocco
[37] Univ Witwatersrand Wits, Sch Phys, Private Bag 3, ZA-2050 Johannesburg, South Africa
[38] Univ Catania, Dipartimento Fis & Astron Ettore Majorana, INFN CT, Via Santa Sofia 64, I-95123 Catania, Italy
[39] INFN, Sez Bari, Via Orabona 4, I-70125 Bari, Italy
[40] Western Sydney Univ, Sch Comp Engn & Math, Locked Bag 1797, Penrith, NSW 2751, Australia
[41] Univ Genoa, Via Dodecaneso 33, I-16146 Genoa, Italy
[42] Univ Granada, Dpto Fis Teor & Cosmos, Granada 18071, Spain
[43] Univ Granada, CAFPE, Granada 18071, Spain
[44] NIOZ Royal Netherlands Inst Sea Res, POB 59, NL-1790 AB Den Burg, Netherlands
[45] Leiden Univ, Leiden Inst Phys, POB 9504, NL-2300 RA Leiden, Netherlands
[46] Tbilisi State Univ, Dept Phys, 3 Chavchavadze Ave, Tbilisi 0179, Georgia
[47] Univ Georgia, Inst Phys, Kostava Str 77, Tbilisi 0171, Georgia
[48] Inst Univ France, 1 Rue Descartes, F-75005 Paris, France
[49] Univ Johannesburg, Dept Phys, POB 524, ZA-2006 Auckland Pk, South Africa
[50] Lab Univ & Particules Montpellier, Pl Eugene Bataillon CC 72, F-34095 Montpellier 05, France