Table 1.

Confusion matrices for detection and classification of sperm whales at three Antarctic sites. Classifier parameters (described in detail in the text and Equation 1) were T = 0.5 and S >300 ICIs per hour.

Site	Hours Analysed	True Positives	False Positives	False positive rate (%)
Prydz	6866	62	241	3.5
Casey	13513	359	160	1.2
S. Kerguelen Plateau	25754	644	97	0.4
Total	46133	1065	498	1.1