Number of correct responses to 20% photo-oxidized Hibernia crude oil, positive control and fractions, by each canine.

An alert is represented by A and no alert/ response is represented by N. Within this session, 41 negative controls and distractors were presented. n represents the number of times a sample was presented throughout the trial.

以符号A表示存在警示信号，以符号N表示无警示信号或未产生响应。本次实验会话中共呈现41个阴性对照（negative controls）与干扰项（distractors）。其中n代表整个实验试次中单个样本被呈现的总次数。