Table 1. Characteristics of raw (measured) tree-ring data and of the standard chronologies for each of four (High, Middle High, Middle Low and Low) elevations and for the overall composite chronology.

Site code	Altitude (m)	Slope(°)	Core/Tree	Time span(AD)	ML	Max/Mean/Min TRW (mm)
H	3900–4015/3965	40–65	165/93(45)	955–2011	452	0.667/0.331/0.127
MH	3790–3899/3818	40–65	147/85(37)	1005–2011	447	0.671/0.352/0.131
ML	3701–3789/3760	35–60	165/91(54)	940–2011	436	0.874/0.394/0.205
L	3550–3700/3603	15–45	117/62(31)	1110–2011	369	1.331/0.513/0.169
ALL	-	-	594/331(167)	940–2011	430	1.331/0.39/0.127

Altitude: elevation range/median elevation; Slope: topographic slope angle; Core/Tree: number of cores and trees collected at this elevation, the value in round brackets is the number of trees for which pith offsets are available; Time span: the period when the EPS value is greater than 0.85,which means the time series is robust. ML: mean segment length; Max/Mean/Min TRW: maximum, mean and minimum tree-ring width; MS: mean sensitivity of raw ring data and standard chronology; AC1: first-order autocorrelation of raw ring data and standard chronology; R/R1/R2: mean inter-series/within-tree/between-tree correlation coefficient; PC1: percent variance explained by the first principal component of raw ring data and standard chronology; SNR: signal-to-noise ratio of raw ring data and standard chronology; EPS: expressed population signal, calculated for ARSTAN standard chronologies for 30-year intervals with 15-year overlaps.

^*Calculated for the common period 1750–2000 (1700–2000 for the composite chronology).