Average Temperature1		Wetting Period (hr)2			Incubation Period (days)3
F	C	&nbspLow	Medium	&nbspHigh
78	25.6	13	17	26	---
77	25	11	14	21	---
76	24.4	9.5	12	19	---
63-75	17.2-23.9	9	12	18	9
62	16.7	9	12	19	10
61	16.1	9	13	20	10
60	15.6	9.5	13	20	11
59	15	10	13	21	12
58	14.4	10	14	21	12
57	13.9	10	14	22	13
56	13.3	11	15	22	13
55	12.8	11	16	24	14
54	12.2	11.5	16	24	14
53	11.7	12	17	25	15
52	11.1	12	18	26	15
51	10.6	13	18	27	16
50	10	14	19	29	16
49	9.4	14.5	20	30	17
48	8.9	15	20	30	17
47	8.3	15	23	35	---
46	7.8	16	24	37	---
45	7.2	17	26	40	---
44	6.6	19	28	43	---
43	6.1	21	30	47	---
42	5.5	23	33	50	---
41	5	26	37	53	---
40	4.4	29	41	56	---
39	3.9	33	45	60	---
38	3.3	37	50	64	---
37	2.7	41	55	68	---
33-36	0.5-2.2	48	72	96	---
1Average temperature during the wetting period in Fahrenheit or Celsius 2Required length of wetting to achieve 'low', 'medium', or a 'high' degree of   infection 3Time in days until visible symptoms appear