Observed distances from camera traps to Maxwell's duikers at times of peak activity

Filmed Maxwell's duikers were assigned to distance intervals; recorded distances are the midpoints of the intervals. "Sample.Label" references the trap location. "Effort" is temporal effort, i.e. the number of 2-second time-steps over which the camera operated. "multiplier" describes spatial effort, as the proportion of a circle covered by the angle of view of the camera. The data is formatted as a "flatfile" suitable for use with distance sampling software including Distance and associated R packages. This file includes only observations recorded at times of peak activity.

拍摄到的麦氏小羚羊（Maxwell's duikers）被归入各距离区间，记录的距离值为对应区间的中点。"Sample.Label"指代相机陷阱位点。"Effort"代表时间投入，即相机运行时长所对应的2秒时间步总数量。"multiplier"表征空间投入，为相机视场角覆盖的圆形区域占比。该数据集采用平面文件（flatfile）格式，可兼容包括Distance及其配套R包在内的各类距离采样软件。此文件仅收录活动高峰期记录的观测数据。