Fig. 19From: The CHAOS-7 geomagnetic field model and observed changes in the South Atlantic AnomalyLong observatory series showing annual differences of revised monthly means of the radial field at four low latitudes observatories, Honolulu, Hawaii (top left), San Juan, Puerto Rico (top right), M’Bour, Senegal (bottom left) and Guam, Micronesia (bottom right)Back to article page