Fig. 5
a) The local wavelet power spectrum for ℓ = 0, 1, 2. White represent areas of little power, red those with the largest power. Solid rings identify areas at power of 0.001, 0.002, 0.005 over time, and only those that achieved 90% confidence level are labeled. b) Global wavelet power spectrum. The dotted line are the 90% of confidence level.
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