Number of sample stations and their average position.

Mean longitude and latitude (Lon and Lat) with respective standard deviations (SD) for trawl stations (n, number of stations) within core survey strata during spring and autumn. Longitude and latitude outside mean ±SD are highlighted; also highlighted are years with fewer than 200 trawl stations.本数据集统计了春秋季核心调查分层内拖网站位的经度（Longitude, Lon）、纬度（Lat）的均值及其对应标准差（Standard Deviation, SD），其中n为拖网站位总数量。超出平均值±标准差范围的经纬度数据将被高亮标注；拖网站位数少于200个的年份同样会被高亮标注。