Table II.

Positive (PPV) and negative (NPV) predictive values for each sampling regime by month.

	Month	Test Result	Diseased	Not diseased	Total	PPV or NPV
FLOW	NOV	Positive	2	0	2	1
		Negative	3	1	4	0.25
	DEC	Positive	4	0	4	1
		Negative	1	1	2	0.5
	JAN	Positive	1	0	1	1
		Negative	4	1	5	0.2
STATIC	NOV	Positive	3	0	3	1
		Negative	2	1	3	0.33
	DEC	Positive	5	0	5	1
		Negative	0	1	1	1
	JAN	Positive	4	0	4	1
		Negative	1	1	2	0.5
SPAWN	NOV	Positive	4	0	4	1
		Negative	1	1	2	0.5
	DEC	Positive	5	0	5	1
		Negative	0	1	1	1
	JAN	Positive	4	0	4	1
		Negative	1	1	2	0.5