[1] Univ Salamanca, Dept Fis Fundamental, E-37008 Salamanca, Spain
[2] Univ Salamanca, IUFFyM, E-37008 Salamanca, Spain
[3] Univ Complutense Madrid, Dept Fis Teor, Madrid 28040, Spain
[4] Univ Complutense Madrid, Inst Fis Particulas & Cosmos IPARCOS, Madrid 28040, Spain
[5] Univ Sao Paulo, Inst Fis, Rua Matao 1371, BR-05508090 Sao Paulo, Brazil
[6] Observ Nacl, Rua Gen Jose Cristino 77, BR-20921400 Rio De Janeiro, Brazil
[7] CSIC, Inst Astrofis Andalucia, Apdo 3004, E-18080 Granada, Spain
[8] CSIC, Unidad Asociada, Ctr Estudios Fis Cosmos Aragon CEFCA, Plaza San Juan 1, E-44001 Teruel, Spain
[9] Donostia Int Phys Ctr DIPC, Manuel Lardizabal Ibilbidea 4, San Sebastian, Spain
[10] Basque Fdn Sci, Ikerbasque, E-48013 Bilbao, Spain
[11] Univ Fed Bahia, Inst Fis, BR-40210340 Salvador, BA, Brazil
[12] Abante Asesores, Plaza Independencia 6, Madrid 28001, Spain
[13] Univ Michigan, Dept Astron, 311West Hall,1085 South Univ Ave, Ann Arbor, MI 48109 USA
[14] Univ Alabama, Dept Phys & Astron, Box870324, Tuscaloosa, AL 35487 USA
[15] Univ Sao Paulo, Dept Astron, Inst Astron, Geofisicae Ciencias Atmosfer, Sao Paulo, Brazil
[16] Univ Fed Espirito Santo, Nucleo Astrofis & Cosmol, BR-29075910 Vitoria, ES, Brazil
[17] Univ Fed Espirito Santo, Dept Fis, BR-29075910 Vitoria, ES, Brazil
[18] INAF Osservatorio Astron Trieste, Via Tiepolo 11, I-34131 Trieste, Italy
[19] IFPU Inst Fundamental Phys Universe, Via Beirut 2, I-34151 Trieste, Italy
[20] Instruments4, 4121 Pembury Pl, La Canada Flintridge, CA 91011 USA