This data set features an old version of the CHAMP Rapid Science Orbits. The access to these data are discontinued. Please refer to more recent versions (e.g. rapid science orbits)
The World Magnetic Model is the standard model used by the U.S. Department of Defense, the U.K. Ministry of Defence, the North Atlantic Treaty Organization (NATO) and the International Hydrographic Or
NOAA National Centers for Environmental Information2014-01-01 更新80
