arcnum starttime       endtime        lineid
1      20021710031590  20021710343470 1
2      20021711628000  20021711804590 2
3      20021711818480  20021711941470 3
4      20021711958000  20021712050350 4
5      20021712137480  20021712239350 5
6      20021712306360  20021720227110 6
7      20021721318320  20021721450200 7
8      20021721514360  20021721612120 8
9      20021721619360  20021721817480 9
10     20021721824480  20021722102010 10
11     20021722202130  20021722324250 11
12     20021730017250  20021730027130 12
13     20021730033010  20021730211130 13