log_file log_date log_time ocn year
ocn.log.160119-175954   160119   175954        0
ocn.log.160119-182648   160119   182648        0
ocn.log.160120-001624   160120     1624        1
ocn.log.160120-054616   160120    54616        2
ocn.log.160120-123250   160120   123250        3
ocn.log.160120-181212   160120   181212        4
ocn.log.160120-234632   160120   234632        5
ocn.log.160121-055333   160121    55333        6
ocn.log.160127-110534   160127   110534        7
ocn.log.160127-185338   160127   185338        8
ocn.log.160128-002412   160128     2412        9
ocn.log.160128-060555   160128    60555       10
ocn.log.160128-144735   160128   144735       11
ocn.log.160128-201949   160128   201949       12
ocn.log.160129-022836   160129    22836       13
ocn.log.160129-115408   160129   115408       14
ocn.log.160129-192932   160129   192932       15
ocn.log.160130-022757   160130    22757       16
ocn.log.160130-075802   160130    75802       17