Towing depth, start time, haul duration, catch weight, and mean fish length in the conventional and sequential codends.

Towing depth, start time, haul duration, catch weight, and mean fish length in the conventional and sequential codends.常规网囊（codend）与顺序式网囊的拖网深度、作业开始时间、拖曳时长、渔获重量及鱼类平均体长。