Table 2.

The estimation of logistic model parameters calculated for the Alnus, Corylus and Betula season onset in Krakow in 1991–2010

Taxon	Alnus (χ 2 = 18.018; p = 0.00012)			Corylus (χ 2 = 22.468; p = 0.00001)			Betula (χ 2 = 52.821; p = 0.0000)
Statistics	Constant	Day of “local minimum”	5-day running mean of maximum temperature	Constant	Day of “local minimum”	5-day running mean of maximum temperature	Constant	Day of “local minimum”	5-day running mean of mean temperature
Model parameter estimation	−3.588	0.066	0.185	−4.155	0.074	0.215	−25.413	0.274	0.352
Standard error of estimation	0.860	0.02	0.092	0.963	0.021	0.101	6.557	0.074	0.157
t(64)	−4.174	3.232	2.005	−4.314	3.553	2.121	−3.876	3.701	2.241
p*	0.00009	0.002	0.049	0.00005	0.0007	0.03	0.0002	0.0004	0.028
−95 % CI	−5.306	0.025	0.0006	−6.077	0.033	0.013	−38.489	0.126	0.039
+95 % CI	−1.871	0.106	0.3692	−2.232	0.116	0.417	−12.336	0.421	0.665
χ 2 (Wald Statistic)	17.421	10.449	4.019	18.612	12.624	4.498	15.023	13.695	5.024
p**	0.00003	0.001	0.044	0.00002	0.0004	0.03	0.0001	0.0002	0.025
Odds ratio	0.028	1.068	1.203	0.016	1.077	1.239	0.000000000009	1.315	1.422
−95 % CI	0.005	1.025	1.0007	0.002	1.033	1.013	1.92410300000	1.135	1.039
+95 % CI	0.154	1.112	1.447	0.107	1.123	1.517	0.000004389463	1.524	1.945

p*—Calculated for tests of significance; p**—for the Wald statistic