Heiner Igel¹, Shihao Yuan¹, Taufiqurrahman Taufiqurrahman¹, Alice-Agnes Gabriel² and Jean-Paul Montagner³, (1)Ludwig Maximilians University of Munich, Munich, Germany, (2)Ludwig-Maximilians-Universität, Munich, Germany, (3)University de Paris, Institut de Physique du Globe de Paris, Paris, France