Twelve-Year Trends of PM₁₀ and Visibility in the Hefei Metropolitan Area of China

Table 2

Multiple regression statistics for visibility to temperature, relative humidity, and PM₁₀ concentraitons.

(a)

Regression statistics
Multiple	0.69
	0.47
Adjusted	0.47
Std. error	1.36
Observations	4586

(b)

	Coefficients	Std. error	stat.	value	Lower 95%	Upper 95%
Intercept	11.46	0.14	80.07	0.00	11.18	11.74
Temperature	0.04	0.00	18.20	0.00	0.03	0.04
RH	−0.09	0.00	−57.37	0.00	−0.09	−0.08
PM10	−0.01	0.00	−34.26	0.00	−0.02	−0.01