Bx, MAGE02-13: IGRF 13th model time variation 1900-2020
IGRF13th (Alken et al., 2021, Earth Planets and Space, 73:49, https://doi.org/10.1186/s40623-020-01288-x
Projection on Google Earth by MAGE Projcet http://mage-p.org/ 2007-2023

Image Bx (1900)
Year 1900

Image Bx (1905)
Year 1905

Image Bx (1910)
Year 1910