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Table III

Site chronology information. Statistics were calculated for the period of all standard chronologies, 1918–2004.

Chronology Site 3 Site 4 Site 5
Time span 1902–2005 1880–2005 1902–2004
Maximum/Minimum sample length (age) 104/52 119/43 103/53
Mean sample length (age) 76 102 75
Number of cores/trees in chronology 41/25 38/22 49/26
Mean/Median tree-ring width (mm) 4.0/3.6 3.0/2.8 1.7/1.6
Mean sensitivity (relative year-to-year variability) 0.38 0.46 0.41
First-order autocorrelation 0.52 0.60 0.74
Signal-to-noise ratio 9.34 10.82 6.44
Variance in first eigenvector (%) 50.25 48.20 55.15
Mean correlations among trees 0.46 0.44 0.48
Agreement with population chronology 0.90 0.92 0.87

Correlation/Gleichläufigkeit*(%) between raw chronologies for period 1918–2004

Site 4 0.14/2.46
Site 5 0.11/–0.6 0.05/2.21

* According to Eckstein and Bauch (1969).