log_file log_date log_time ocn year
ocn.log.150205-233527   150205   233527      242
ocn.log.150206-093120   150206    93120      258
ocn.log.150206-192612   150206   192612      274
ocn.log.150207-052146   150207    52146      290
ocn.log.150207-152019   150207   152019      306
ocn.log.150208-011502   150208    11502      322
ocn.log.150208-111459   150208   111459      338
ocn.log.150208-212539   150208   212539      354
ocn.log.150209-071706   150209    71706      370
ocn.log.150209-170845   150209   170845      386