^○Bernhard Steinberger^{1, 2}, Miriam-Lisanne Seidel³, Trond Torsvik^1,2,4 (1.GFZ German Research Centre for Geosciences, Potsdam, Germany, 2.Centre for Earth Evolution and Dynamics, University of Oslo, Oslo, Norway, 3.Werner-von-Siemens Gymnasium, Berlin, Germany, 4.Geological Survey of Norway (NGU), Trondheim, Norway, 5.University of Witwatersrand, Wits, South Africa)

^○Maik Thomas¹, Robert Dill¹, Henryk Dobslaw¹, Christian Bizouard² (1.GFZ German Research Centre for Geosciences, Potsdam, Germany, 2.Observatoire de Paris, Paris, France)

^○Jianli Chen (Center for Space Research, University of Texas at Austin, Austin, Texas, USA)

^○Jolanta Nastula¹, Malgorzata Winska^{1, 2}, Waldemar Popinski³ (1.Space Research Centre Polish Academy of Sciences, Warsaw, Poland, 2.Warsaw University of Technology, Faculty of Civil Engineering, Warsaw, Poland, 3.Department of Methodology and Standards, Central Statistical Office, Warsaw, Poland)

^○Justyna Sliwinska, Jolanta Nastula (Space Research Centre of Polish Academy of Sciences, Warsaw, Poland)