As in Fig. 32 for l = 1, this illustration for l = 2 uses two independent sequences of 56 intervals equidistant in period, the first half (shorter periods, ranging from n = −33 to −88) is plotted in blue and the second half (longer periods, ranging from n = −89 to −144, slightly rescaled) is shown in red, both computed on the complete time series of 16.5 years. The first three periods of each sequence are shown.