We obtained the average total length and the stander deviation of total length of flounder for each age, by month, from the measurement data on the tagged flounder for which age was known.

• 我们从对知道其年龄并为其贴上标签的比目鱼的以月为单位的测量数据中；得到了每个年龄段的比目鱼平均总寿命及其较稳定的误差.