Figure 2. Stationarity of the macro-level statistical distributions and variation at the micro level with time.

The cumulative distributions of (a) degree k, (b) strength s and (c) link weight w of the PACS network, for four different years. The curves have been scaled by their averages for the given year. (d) The dissimilarity coefficient ζ for the degree and strength ranks of the nodes, between the year 1985 and subsequent years.