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. 2016 Nov 2;9:839–845. doi: 10.1016/j.dib.2016.10.022

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© 2016 The Authors

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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Fig. 2. — (a) GT-based West-Nile virus disease related web-searches. (b) The wavelet power spectrum. The contour levels are chosen so that 75%, 50%, 25%, and 5% of the wavelet power is above each level, respectively. A statistically significant regular 1-year pattern can be detected. (c) The global wavelet power spectrum.