Measuring Retiming Responses of Passengers to a Prepeak Discount Fare by Tracing Smart Card Data: A Practical Experiment in the Beijing Subway

Table 6

Center point for each group.

Travel indexes	Group 1	Group 2	Group 3	Group 4	Group 5
average travel days per week	4.64	4.49	3.21	2.29	0.96
standard deviation of travel days per week	0.27	0.39	1.31	0.74	0.24
average number of trips per day	1.88	2.25	1.76	1.72	1.41
start time of the first trip	484.98	474.90	474.61	554.62	364.47
standard deviation of the first-trip start times	13.56	49.99	23.07	62.23	5.85
average activity duration per day	737.16	777.39	700.68	550.47	171.59
OD coverage rate	0.17	0.33	0.30	0.62	0.80