63
visitDuration>=0;visitDuration<=10
4
visitDuration>=11;visitDuration<=30
3
visitDuration>=31;visitDuration<=60
1
visitDuration>=60;visitDuration<=120
3
visitDuration>=120;visitDuration<=240
3
visitDuration>=240;visitDuration<=420
0
visitDuration>=420;visitDuration<=600
5
visitDuration>=600;visitDuration<=900
1
visitDuration>=900;visitDuration<=1800
1
visitDuration>=1801