hec_id,time_start,time_peak,time_end,nar,lat_hg,long_hg,long_carr,xray_class,optical_class 30575308,2015-05-01 02:48:00.0,2015-05-01 02:57:00.0,2015-05-01 03:07:00.0,12335,,,,C2.3, 30575309,2015-05-01 21:42:00.0,2015-05-01 21:45:00.0,2015-05-01 21:53:00.0,,,,,B3.3, 30575310,2015-05-01 22:54:00.0,2015-05-01 22:57:00.0,2015-05-01 23:00:00.0,12335,,,,B3.9,