Fig. 2From: Spatial gradients of geomagnetic temporal variations causing the instability of inter-station transfer functionsLocation of each (geo)magnetic observatory. (1) Beijing Ming Tombs (BMT). (2) Kakioka (KAK). (3) Kanoya (KNY). (4) Memambetsu (MMB). The original of this map without any annotation can be downloaded from Craft MAP (http://www.craftmap.box-i.net/world.php; Accessed 26 Dec 2019)Back to article page