Johan Lauritz Freiherr von Forstner¹, Jingnan Guo^1,2, Robert F Wimmer-Schweingruber³, Mateja Dumbovic⁴, Miho Janvier⁵, Pascal Demoulin⁶, Astrid Veronig⁷, Manuela Temmer⁷, Don Hassler⁸ and Cary Zeitlin⁹, (1)University of Kiel, Institute of Experimental and Applied Physics, Kiel, Germany, (2)University of Science and Technology of China, School of Earth and Space Sciences, Hefei, China, (3)University of Kiel, Institute for Experimental and Applied Physics, Kiel, Germany, (4)University of Zagreb, Hvar Observatory, Faculty of Geodesy, Zagreb, Croatia, (5)Institut d'Astrophysique Spatiale, Orsay, France, (6)LESIA, Observatoire de Paris, Meudon, France, (7)University of Graz, Institute of Physics, Graz, Austria, (8)Southwest Research Institute, Boulder, CO, United States, (9)Leidos Innovations Corporation, Houston, TX, United States