Pricing for Refund Service Fee of High-Speed Railway: An Optimization Approach with Uncertain Demand

Table 6

Statistics of the number of refunds per day in the presale period.

The proportion of daily refunds to the total number in the presale period (%)
= 1	= 2	= 3	= 4	= 5	= 6	= 7	= 8
1.04%	0.91%	0.84%	0.89%	1.03%	1.20%	1.44%	1.97%
= 9	= 10	= 11	= 12	= 13	= 14	= 15
2.57%	3.14%	4.30%	6.15%	8.43%	19.14%	46.95%