From: Forecasting yearly geomagnetic variation through sequential estimation of core flow and magnetic diffusion
\(L_u\)
2001.0–2010.0
2003.0–2010.0
2005.0–2010.0
2007.0–2010.0
2009.0–2010.0
\(N=0\)
\(N=2\)
8
109
81
99
78
90
75
79
67
66
62
14
107
80
97
77
65