*Paul Prikryl^1,2, Koki Iwao³, Takumi Tsukijihara⁴, Donald B. Muldrew⁵, Vojto Rušin⁶, Milan Rybanský⁷, Robert Bruntz⁸ (1.Geomagnetic Laboratory, Natural Resources Canada, Ottawa, ON, Canada, 2.Physics Department, University of New Brunswick, Fredericton, NB, Canada, 3.National College of Technology, Kumamoto College, Yatsushiro, Japan, 4.Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan, 5.Emeritus, Communications Research Centre, Ottawa, ON, Canada, 6.Astronomical Institute, Slovak Academy of Sciences, Tatranská Lomnica, Slovakia, 7.Slovak Central Observatory, Hurbanovo, Slovakia, 8.Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA)

*Paul Prikryl^1,2, Reza Ghoddousi-Fard³, Martin Connors⁴, James M. Weygand⁵, Donald W. Danskin², P. Thayyil Jayachandran¹, Knut Stanley Jacobsen⁶, Yngvild Linnea Andalsvik⁶, Evan G. Thomas⁷, Mike Ruohoniemi⁷, Tibor Durgonics⁸, Kjellmar Oksavik^9,10, Yongliang Zhang¹¹, Marcio Aquino¹², V. Sreeja¹² (1.Physics Dept., University of New Brunswick, Fredericton, NB, Canada, 2.Geomagnetic Laboratory, Natural Resources Canada, Ottawa, ON, Canada, 3.Canadian Geodetic Survey, Natural Resources Canada, Ottawa, ON, Canada, 4.Athabasca University, Edmonton, AB, Canada, 5.Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA, USA, 6.Norwegian Mapping Authority, Hønefoss, Norway, 7.Bradley Dept. of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA, USA, 8.Technical University of Denmark, National Space Institute, Kongens Lyngby, Denmark, 9.Birkeland Centre for Space Science, Dept. of Physics and Technology, Univ. of Bergen, Bergen, Norway, 10.The University Centre in Svalbard, Longyearbyen, Norway, 11.Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA, 12.Nottingham Geospatial Institute, University of Nottingham, Nottingham, UK)