A Study of the Persistence of Mycobacterium bovis in the Environment under Natural Weather Conditions in Michigan, USA

Table 1

Weather conditions recorded over the three sampling periods at the site of the Mycobacterium bovis environmental persistence study and temperature and precipitation data from the TB area of Michigan for the same time.

	Fall/Winter “A” 11/8/04–1/6/05	Winter/Spring “B” 2/4/05–5/3/05	Spring/Summer “C” 5/20/05–8/2/05
	Average (Min.–Max)	Average (Min.–Max)	Average (Min.–Max)
Temperature (°C)	0.35 (−20.83–21.06)	2.82 (−14.44–29.72)	21.72 (4.83–36.94)
Temperature (°C) TB Area	−2.75 (−27.50–12.80)	−0.35 (−22.20–28.80)	19.55 (0.70–35.80)
Precipitation (mm)	1.71 (0.00–20.83)	0.91 (0.00–18.54)	3.13 (0.00–30.48)
Precipitation (mm) TB Area	1.49 (0.00–22.35)	0.78 (0.00–12.70)	2.02 (0.00–24.64)
Humidity (%)	85.92 (27.00–100.00)	66.07 (4.00–100.00)	62.44 (10.00–100.00)
Solar Radiation (W/m^2)	24.29 (0.00–347.00)	79.99 (0.00–1040.00)	149.95 (0.00–1170.00)
Evapotranspiration (mm)	0.03 (0.00–1.02)	0.18 (0.00–2.29)	0.38 (0.00–3.30)