Table 2.

Categorization of pollen types based on the changes of direction in both pollen monitoring station, divided into the categories very high relationship, high relationship, medium relationship, low relationship and no relationship.

Categories	Range of Yule's Q	Pollen types	Additional information on the taxa
very high relationship	≥0.9	ALNU, BETU, CARP, FAGU, QUER	All taxa widespread in Vienna
high relationship	≥0.8–0.9	AMBR, FRAX, PINU, PLAT, POAC, POPU, URTI	FRAX, PINU, PLAT, POAC, POPU, URTI widespread in Vienna AMBR inhomogeneous, mostly long-range transport
medium relationship	≥0.4–0.8	ARTE, CHEN, CORY, JUGL, PLAN, SALI, ULMU	ARTE, CHEN, PLAN common in Vienna CORY, JUGL, SALI, ULMU locally scattered
low relationship	≥0.1–0.4	–	–
no relationship	<0.1	CAST	Rare and very local within Vienna