Resolution:
## Figure 2.
Seasonal parameters obtained from mortality data of two different sites ("a" and "b"). The time series in light blue represents three years of raw data, whereas the overlapped
red curve represents the model trend and seasonality. In the last year of the series
the primary peak and trough of each series are highlighted. The amplitude of the periodic
annual function is obtained by dividing the wave height (difference between the peak
and trough values) by the peak value. Despite the troughs of both “a” and “b” being similar, the standardized wave is much bigger in "a" (making it easier to
infer that the resulting amplitude will be higher in "a"). Note that series "b" has a secondary peak - i.e. is a bimodal periodic annual function (the calculation
of the amplitude for this secondary peak follows the same logic as that used for the
primary peak).
Alonso and McCormick |