Table 1. Number of visits per stay time

Stay time Visit time Visit time in stay time / visit time in all stay time
h < 2 (①) 167804 99
2 =< h < 4 (②) 752 0.4
4 =< h < 6 (③) 265 0.15
10 =< h <12 (⑥) 151 0.09
6 =< h < 8 (④) 131 0.08
8 =< h < 10 (⑤) 154 0.07
12 =< h < 14 (⑦) 74 0.04
22 =< h < 24 (⑫) 16 0.014
14 =< h < 16 (⑧) 10 0.009
20 =< h < 22 (⑪) 0 0.007
16 =< h < 18 (⑨) 12 0.005
18 =< h < 20 (⑩) 24 0