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. 2017 Oct 27;7:14241. doi: 10.1038/s41598-017-14468-9

Figure 8.

Figure 8

Monthly cross-correlation functions over 30 years for station pair “GRA1-GRA2”, colour coded by amplitude. The horizontal dashed lines indicate the part of the coda used in the dv/v calculation. The right panel shows a stack of all months.