[1] Univ Politecn Valencia, Inst Invest Gestio Integrada Zones Costaneres IGI, Gandia 46730, Spain
[2] GRPHE Inst Univ Technol Colmar, F-68008 Colmar, France
[3] Aix Marseille Univ, CPPM, CNRS, IN2P3, Marseille, France
[4] Tech Univ Catalonia, Lab Appl Bioacoust, Barcelona 08800, Spain
[5] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy
[6] Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, D-91058 Erlangen, Germany
[7] CEA Saclay, Serv Elect Detecteurs & Informat, Direct Sci Mat, Inst Rech Fondamentales Univers, F-91191 Gif Sur Yvette, France
[8] NIKHEF H, NL-1009 DB Amsterdam, Netherlands
[9] Univ Paris Diderot, Observ Paris, APC, CNRS,IN2P3,CEA,IRFU, F-75205 Paris, France
[10] Univ Valencia, IFIC Inst Fis Corpuscular, CSIC, Valencia 46071, Spain
[11] LAM, F-13388 Marseille 13, France
[12] Ist Nazl Fis Nucl, Sez Bologna, I-40127 Bologna, Italy
[13] Univ Bologna, Dipartimento Fis, I-40127 Bologna, Italy
[14] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy
[15] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[16] Inst Space Sci, Bucharest 77125, Romania
[17] Clermont Univ, Lab Phys Corpusculaire, Univ Blaise Pascal, CNRS,IN2P3, F-63000 Clermont Ferrand, France
[18] Univ Nice Sophia Antipolis, Observ Cote Azur, Geoazur, CNRS,INSU,IRD, Sophia Antipolis, France
[19] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy
[20] Ist Nazl Fis Nucl, LNS, I-95123 Catania, Italy
[21] Aix Marseille Univ, MIO, F-13288 Marseille 9, France
[22] Univ Sud Toulon & Var, CNRS, INSU, IRD,UM 110, F-83957 La Garde, France
[23] Univ Paris Sud, F-91405 Orsay, France
[24] Univ Groningen, KVI, NL-9747 AA Groningen, Netherlands
[25] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy
[26] Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy
[27] Royal Netherlands Inst Sea Res NIOZ, NL-1797 SZ T Horntje Texel, Netherlands
[28] Univ Wurzburg, Inst Theoret Phys & Astrophys, D-97070 Wurzburg, Germany
[29] Univ Utrecht, Fac Betawetenschappen, NL-3584 CC Utrecht, Netherlands
[30] Univ Amsterdam, Inst Hoge Energie Fys, NL-1098 XG Amsterdam, Netherlands
[31] Univ Erlangen Nurnberg, D-96049 Bamberg, Germany
[32] Univ Erlangen Nurnberg, ECAP, D-96049 Bamberg, Germany
[33] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia
[34] Ist Nazl Fis Nucl, Sez Catania, I-95125 Catania, Italy
[35] Univ Catania, Dipartimento Fis & Astron, I-95125 Catania, Italy
[36] CEA Saclay, Direct Sci Mat, Inst Rech Fondamentales Univers, Serv Phys Particules, F-91191 Gif Sur Yvette, France
[37] Univ Geneva, Dept Phys Nucl & Corpusculaire, CH-1211 Geneva, Switzerland
[38] Univ Strasbourg, IPHC, F-67037 Strasbourg 2, France
[39] IN2P3, CNRS, F-37037 Strasbourg 2, France
[40] Inst Theoret & Expt Phys, Moscow 117218, Russia
[41] Leiden Univ, Leids Inst Onderzoek Nat Kunde, NL-2333 CA Leiden, Netherlands
[42] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy
[43] Univ Mohammed 1, Lab Phys Matter & Radiat, Oujda 6000, Morocco
[44] Leiden Univ, NL-2300 RA Leiden, Netherlands
[45] Accademia Navale Livorno, Livorno, Italy