Insiguro y'isanamu, Ikarata y'Ubuyapani Abaraba ivyo ubutaka muri Amerika bari bamenyesheje ko ico ca nyamugigima kiza kuba gifise igipimo ca 7.3, ariko mu nyuma bavuga ko kiza gushikana 6.9, igipimo kiri hasi ugereranije n’icari cavuzwe na bagenzi babo bo mu Buyapani.
