log_file log_date log_time ocn year
ocn.log.160212-170009   160212   170009     2005
ocn.log.160212-204224   160212   204224     2005
ocn.log.160213-063801   160213    63801     2005
ocn.log.160213-151949   160213   151949     2009
ocn.log.160214-000216   160214      216     2013
ocn.log.160214-083941   160214    83941     2017
ocn.log.160214-170218   160214   170218     2021
ocn.log.160215-012423   160215    12423     2025
ocn.log.160215-094330   160215    94330     2029
ocn.log.160216-005708   160216     5708     2033
ocn.log.160216-105629   160216   105629     2037
ocn.log.160216-233004   160216   233004     2041
ocn.log.160217-083311   160217    83311     2045
ocn.log.160222-074159   160222    74159     2049
ocn.log.160223-185152   160223   185152     2049
ocn.log.160224-031758   160224    31758     2053
ocn.log.160225-010019   160225    10019     2057
ocn.log.160225-125938   160225   125938     2061
ocn.log.160226-041135   160226    41135     2065
ocn.log.160226-231130   160226   231130     2069
ocn.log.160227-100505   160227   100505     2073
ocn.log.160227-220325   160227   220325     2077
ocn.log.160228-062652   160228    62652     2081
ocn.log.160228-151524   160228   151524     2085