Table 4.

Correlation between measured PM₁₀ concentration (x) and PCA-MLRA results (y) in different seasons of the 2009 and 2010 years

	Slope	R 2	Intercept
January–March 2009	y = 0.87x	0.90	5.45
April–June 2009	y = 0.88x	0.89	3.19
July–September 2009	y = 0.22x	0.20	10.11
October–December 2009	y = 0.95x	0.95	5.20
January–March 2010	y = 0.82x	0.79	5.55
April–June 2010	y = 0.78x	0.78	5.07
July–September 2010	y = 0.82x	0.82	3.30
October–December 2010	y = 0.85x	0.86	10.09