The basic structural features of the studied 15 real networks.

<p> and are the number of nodes and links, and are the maximum of in-degree and out-degree of all nodes, and is the average degree of all nodes (average in-degree equals average out-degree). and are the 90-percentile effective diameter <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0055437#pone.0055437-Palmer1" target="_blank">[56]</a> and the clustering coefficient for directed networks <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0055437#pone.0055437-Fagiolo1" target="_blank">[57]</a>.