Table 5. Associations between ambient B. pseudomallei concentrations and environmental parameters (rainfall and wind speed) divided by the mean and median values during whole period (June to December), typhoon season (June to September), and typhoon month (August).

	Ambient B. pseudomallei (copies/m3)
	whole period (June–December)				Typhoon season (June–September)				Typhoon month (August)
		N	mean	p-value		N	mean	p-value		N	mean	p-value
Divided by the mean value of samples	Rainfall				Rainfall				Rainfall ≧
	≧8.1 mm	26	45.0	0.17	≧13.7 mm	22	49.7	0.49	24.4 mm	10	33.3	0.85
	<8.1 mm	165	325.3		<13.7 mm	87	621.2		<24.4 mm	21	54.5
	Wind speed				Wind				Wind
	≧2.0 m/s	65	680.6	0.91	≧2.1 m/s	36	1153.6	0.16	≧2.4 m/s	9	22.5	<0.001*
	<2.0 m/s	126	77.2		<2.1 m/s	73	165.1		<2.4 m/s	22	58.0
Divided by the median value of samples	Rainfall				Rainfall				Rainfall
	>0.0 mm	69	101.5	0.006*	>0.1 mm	54	120.7	0.42	>1.5 mm	14	32.7	0.60
	≦0.0 mm	122	389.9		≦0.1 mm	55	873.7		≦1.5 mm	17	60.0
	Wind speed				Wind				Wind
	>1.8 m/s	94	493.7	0.80	>1.9 m/s	54	836.0	0.10	>2.0 m/s	15	39.7	0.36
	≦1.8 m/s	97	84.2		≦1.9 m/s	55	171.4		≦2.0 m/s	16	55.2