Figure 2.

Distribution of number of deaths per day. (a) Syrian and (b) English cities. Distributions of $x=\log \mathrm{(1}+n)$ are plotted. The normal distributions of variables $x=n$, $x=\sqrt{n}$ and $x=\log \mathrm{(1}+n)$ fitted to each data are displayed on top of the histograms, with their goodness-of-fit represented in terms of the log-likelihood $\ell =\log L$. The bin-size of the histograms is determined by Scott’s rule that provides the best fitting for a compact set of data, so to minimize the mean square error³⁵.