4  
5.0
07:22:00  23:54:00 
18:16:00  23:58:30
05:21:00  12:24:00
9
0.0 0
15.0 1
30.0 2
45.0 3
60.0 2
75.0 1
90.0 1
105.0 2
125.0 3
140.0 2
0