Table 4.

Descriptive statistics for detrended standard chronologies of tree-ring, earlywood and latewood widths of Picea abies from PA, ME, and RN.

	Standardized chronologies
	PA	ME	RN
Time span	1932–2010	1861–2010	1916–2010
Length	79	150	96
Average length of included series	53	84	78
TREE-RING
Mean ring width	0.995	0.994	0.980
Standard deviation	0.142	0.132	0.181
Skewness	0.633	−0.094	−0.471
Kurtosis	2.212	−0.290	1.243
Mean sensitivity	0.142	0.136	0.168
Autocorrelation order 1	0.114	0.220	0.344
Mean correlation between trees	0.327	0.381	0.426
Signal-to-noise ratio	6.809	6.164	11.89
Agreement with population chronology	0.872	0.860	0.922
EARLYWOOD
Mean earlywood width	0.994	0.993	0.975
Standard deviation	0.152	0.142	0.201
Skewness	0.743	−0.007	−0.364
Kurtosis	2.189	−0.193	0.904
Mean sensitivity	0.159	0.147	0.205
Autocorrelation order 1	0.056	0.175	0.259
Mean correlation between trees	0.266	0.375	0.398
Signal-to-noise ratio	4.719	5.989	10.588
Agreement with population chronology	0.825	0.857	0.914
LATEWOOD
Mean latewood width	0.979	0.983	0.976
SD	0.172	0.200	0.177
Skewness	−0.027	−0.058	−0.260
Kurtosis	−0.014	−0.258	0.871
Mean sensitivity	0.181	0.223	0.177
Autocorrelation order 1	0.101	0.420	0.226
Mean correlation between trees	0.257	0.340	0.263
Signal-to-noise ratio	4.491	4.628	5.719
Agreement with population chronology	0.818	0.822	0.851