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. 2020 Oct 20;10:17850. doi: 10.1038/s41598-020-74991-0

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Time series. This figure has been realized using Grapher 7. (a) Time series (July 1st, 2014–December 31st, 2019) of groundwater level recorded in the PF60.3 well (100 m deep; Fig. 1a) is shown with the blue line; time series (October 1st, 2014–November 30th, 2015) of groundwater level recorded in the PF60.2 well (50 m deep; Fig. 1a) is shown with the pink line. (b) Time series (July 1st, 2014–December 31st, 2019) of magnitude (M_w ≥ 6.5) for earthquakes occurred worldwide in the same period of the hydrogeological monitoring is shown with red dots. Seismic data are from the INGV database (available online at https://terremoti.ingv.it/).