Table 5: Dataset.

Event Time The quantity of real data The quantity of collected data The rate of collected

1 2013/1/4–2013/2/2 818 794 97.07%
2 2013/1/9–2013/2/7 1196 1138 95.15%
3 2013/1/4–2013/2/2 1036 992 95.75%
4 2012/10/11–2012/11/9 703 703 100%