Table 3.

Poaceae pollen counts and selected air pollution in the multiple regression analysis and Spearman coefficient in Szczecin (2005–2008) (lack of the air pollution data in 2004)

Taxon	Variance analysis at α = 0.05	Adjusted R-square	Explanatory variables	β	Spearman coefficient
Poaceae	F = 19.82	0.23	SO2	0.26*	0.12*
	p = 0.00		NO	−0.13	−0.05
			NO2	−0.13	0.00
			O3	0.31*	0.46*
			NOx	0.13	−0.02
			PM10	0.18*	0.32*
			CO	−0.02	0.02
Secale	F = 2.76	0.08	SO2	−0.13	−0.06
	p = 0.01		NO	−0.63	−0.07
			NO2	−0.77	0.04
			O3	0.23*	0.19*
			NOx	1.40	−0.00
			PM10	0.24*	0.18*
			CO	−0.12	−0.07

* Statistical significance p < 0.05