Table 3.

Absolute linear trends of the duration of the whole pollen season 1969–2018 from the Corylus flowering until the end of flowering of herbaceous taxa with different pollen season definitions.

	Corylus start to Poaceae end date		Corylus start to Urticaceae end date			Corylus start to Plantago end date
Definition	Trend abs [days]	p-value	Trend abs [days]	p-value	Definition	Trend abs [days]	p-value
clin_bet	−14.2	0.429	20.7	0.129	Corylus: clin_bet Plantago clin_low	24.5	0.072
clin_poa	−4.7	0.722	17.8	0.061	Corylus: clin_poa Plantago clin_poa	6.4	0.738
perc95	0.0	0.925	13.5	0.129	Corylus: perc95 Plantago: perc95	22.3	0.060
perc90	−5.4	0.608	14.0	0.077	Corylus: perc90 Plantago: perc90	27.2	0.004
tr20	−24.5	0.084	12.9	0.221	Corylus: clin_poa Plantago: 3d1	32.7	0.020
tr30	−21.8	0.194	17.7	0.174	Corylus: clin_poa Plantago: 5d1	30.9	0.044
3d20	−12.3	0.369	17.9	0.208
moving	−11.8	0.477	14.0	0.385	Corylus: moving Plantago: moving	−12.3	0.623

On the left end dates calculated for Poaceae and Urticaceae with the eight pollen season definitions. On the right the trend for the whole season with end dates of Plantago with special, low threshold definitions and the definitions “clin_poa,” “moving” and the percentage definitions. Significant trends are marked in bold (p ≤ 0.05).