log_file log_date log_time ocn year
ocn.log.150702-232833   150702   232833        1
ocn.log.150703-033917   150703    33917        2
ocn.log.150703-073601   150703    73601        3
ocn.log.150703-113435   150703   113435        4
ocn.log.150703-153036   150703   153036        5
ocn.log.150703-192702   150703   192702        6
ocn.log.150703-235024   150703   235024        7
ocn.log.150704-034727   150704    34727        8
ocn.log.150704-074432   150704    74432        9
ocn.log.150704-114244   150704   114244       10
ocn.log.150704-153858   150704   153858       11
ocn.log.150704-194539   150704   194539       12
ocn.log.150705-020015   150705    20015       13
ocn.log.150705-055947   150705    55947       14
ocn.log.150705-095630   150705    95630       15
ocn.log.150705-135252   150705   135252       16
ocn.log.150705-175502   150705   175502       17
ocn.log.150705-215950   150705   215950       18
ocn.log.150706-015718   150706    15718       19
ocn.log.150706-055414   150706    55414       20
ocn.log.150706-095053   150706    95053       21
ocn.log.150706-210342   150706   210342       22
ocn.log.150707-182431   150707   182431       23
ocn.log.150708-003721   150708     3721       24
ocn.log.150708-043903   150708    43903       25