Extended Data Fig. 2: Statistical characterization k frequency distributions.
From: Infrastructure deficits and informal settlements in sub-Saharan Africa
a, The distribution for the entire sub-Saharan Africa, b, limited to urban areas, c, peri-urban and d, rural areas, as in Fig. 2a. A log-normal distribution (blue line) is the best fit in all cases but parameters vary reflecting a growing mean, variance and skew for urban blocks, peri-urban, and rural areas, respectively. Other best-fit distributions (gamma, logistic, Poisson, and Weibull) are shown for comparison in different colours. e-p, Block complexity frequency distributions for select major sub-Saharan cities. Distribution parameters for all nations in sub-Saharan Africa and major urban areas are given in Table S1.
