Results of wavelet analysis.

<p>a) Wavelet coherence between the two time series. Colour code from purple (low values) to red (high values). The arrows indicate synchrony of the two time series: arrows pointing to the right means the oscillations are synchronised. Arrows are only plotted within white contour lines that indicate significance. The shaded area near the edges in the graphs is the cone of influence, and indicates the range of the graph where the results are not reliable because of edge effects. b) Phases of the oscillations of the two time series (SVD—STEAM visitor days—in orange and FVD—Flickr visitor days—in purple) computed in the 8–16 periodic band where there is significant correlation. The dotted line is the phase difference.