6400,2008-02-04 19:46:09,116.27213,39.87415
6400,2008-02-05 19:55:56,116.30514,39.92298
6400,2008-02-06 20:05:41,115.9368,40.00654
6400,2008-02-07 20:15:25,116.09565,39.93738
