log_file log_date log_time ocn year
ocn.log.160804-185838   160804   185838      893
ocn.log.160805-080447   160805    80447      902
ocn.log.160805-182659   160805   182659      911
ocn.log.160806-045425   160806    45425      920
ocn.log.160806-151817   160806   151817      929
ocn.log.160807-014334   160807    14334      938
ocn.log.160807-115929   160807   115929      947
ocn.log.160807-222135   160807   222135      956
ocn.log.160808-095604   160808    95604      965
ocn.log.160808-213915   160808   213915      974
ocn.log.160809-093308   160809    93308      983
ocn.log.160809-225648   160809   225648      992