Table 1: The average degree, shortest past length and clustering coefficient of networks.

Network 2012-1 2012-2 2012-3 2012-4 2013-1 2013-2 2013-3 2013-4
C 0.8374 0.8340 0.8334 0.8373 0.8292 0.8336 0.8350 0.8386
k 11.0412 11.0264 10.2412 10.8264 10.3771 10.8474 11.2433 10.7597
l 3.0618 3.2256 3.4453 3.0429 3.3554 3.3083 3.1169 3.0237