Fig. 6.

Time series of smoothed RZM′ (black) and DI′, the latter being offset (as indicated by the horizontal lines that indicate the zero level) for clarity with different colors as noted in the legend. Pearson’s correlation coefficients (r) with respect to RZM′ prior to the fitting are listed on the top right in the associated colors. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)