log_file log_date log_time ocn year
ocn.log.151212-082025   151212    82025        0
ocn.log.151212-083555   151212    83555        0
ocn.log.151212-191223   151212   191223        1
ocn.log.151213-063346   151213    63346        3
ocn.log.151213-164926   151213   164926        4
ocn.log.151214-070512   151214    70512        4
ocn.log.151214-172203   151214   172203        0
ocn.log.151214-204415   151214   204415        6