Using Smart Card Data Trimmed by Train Schedule to Analyze Metro Passenger Route Choice with Synchronous Clustering

Table 3

Data normalization.

ID	Inbound time	Pure travel time		ID	Inbound time	Pure travel time
1	07:24:53	2817	Normalization; →	1	-2.260	-0.382
2	07:24:53	3117		2	-2.260	-0.268
3	07:24:53	2967		3	-2.260	-0.057
4	10:14:10	2692		4	-1.516	-0.652
5	16:31:50	2369		5	0.143	-1.352
……				……