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Natural magnetic fields are described by NASA scientists.
1982
5.7
2022
5.1
2023
6.2
1972
7.1
1987
5.5
1942
6.8
2020
2005
7.2
2004
1998
2011
1970
7.0
5.9
2012
1989
6.0
6.7
1991
5.3
7.7
7.4