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Earth, Planets and Space
Fig. 7 | Earth, Planets and Space

Fig. 7

From: Spatial gradients of geomagnetic temporal variations causing the instability of inter-station transfer functions

Fig. 7

IS-TFs at 9/30,720 Hz derived from the data during October/November from 2000 to 2009. a IS-TFs for KAK/KNY. The vertical axis denotes the absolute amplitude of IS-TFs and the horizontal axis denotes years. b KNY/KAK. c KAK/MMB. d MMB/KAK. e KNY/MMB. f MMB/KNY. The red points denote \(T_{xx}\) and the light-blue points denote \(T_{yy}\). Note that the vertical axes of b, d, and f are reversed. Error bars correspond to 95% confidence level

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