Wavelet power and global wavelet spectra obtained by the CWT applied to the original CME time series. Day of the series, from 01/01/2000 up to 12/31/2012 is at the horizontal axis. The days that appear in the x label are associated with years: day 1000 corresponds to 09/26/2002; day 2000 is 06/22/2005; day 3000 occurred on 03/18/2008 and finally, day 4000 corresponds to 12/13/2010. Vertical axis shows the full band (2–4096 days) of investigations. On the right, the corresponding GWS is shown.