From: A secular variation candidate model for IGRF-13 based on Swarm data and ensemble inverse geodynamo modelling
Component
Mid-latitude
High-latitude
X
\(9\, \hbox { nT}^2\)
\(100\, \hbox { nT}^2\)
Y
\(144\, \hbox {nT}^2\)
Z
\(36\, \hbox {nT}^2\)
\(100\, \hbox {nT}^2\)