Comparison of predicted porpoise densities and acoustic metrics

Predicted porpoise densities are courtesy of Jason J. Roberts. Acoustic data were collected from November 2014 to May 2016 offshore of Maryland, USA. Columns of importance are the site (1-4), month, Density, and the four acoustic metric columns (maximum number of hours per day with a detection, total number of hours with a detection, maximum number of hours in a day with a detection, and the proportion of days with a detection).本数据集的预测鼠海豚（porpoise）密度数据由Jason J. Roberts提供。声学数据采集于2014年11月至2016年5月，采集区域为美国马里兰州近岸海域。该数据集的关键列包括：站点（1-4）、采集月份、密度（Density），以及四列声学指标列，分别为：单日检测到信号的最大小时数、总检测时长、单日检测到信号的最大小时数、检测到信号的天数占比。