Table 1. General characteristics of the four “standard” tree-ring chronologies.
251659264 | Lower site | Mid site | Higher-mid site | Higher site |
Time span | 1378–2011 | 1362–2011 | 1329–2011 | 1310–2011 |
Trees/Cores | 50/109 | 52/110 | 47/111 | 46/90 |
MSL | 211 | 208 | 247 | 249 |
AGR | 0.61 | 0.40 | 0.39 | 0.43 |
MRR | 1.21% | 1.11% | 1.13% | 0.55% |
SD | 0.26 | 0.34 | 0.31 | 0.24 |
MS | 0.26 | 0.37 | 0.31 | 0.25 |
AC1 | 0.33 | 0.25 | 0.31 | 0.22 |
PC#1 | 29.10 | 39.81 | 36.49 | 34.07 |
SNR | 61.04 | 79.73 | 74.73 | 70.18 |
EPS | 0.98 | 0.99 | 0.99 | 0.99 |
EPS >0.85 | 1530/5 | 1545/6 | 1450/6 | 1560/6 |
R1 | 0.54 | 0.52 | 0.53 | 0.53 |
R2 | 0.66 | 0.62 | 0.59 | 0.78 |
R3 | 0.53 | 0.51 | 0.52 | 0.52 |
MSL is the mean segment length; AGR is the average growth rate; MRR is the missing-ring rate; SD is the standard deviation; MS is the mean sensitivity; AC1 is the first order autocorrelation; PC#1 is the variance explained by the first principal component; SNR is the signal-to-noise ratio; EPS is the expressed population signal; EPS >0.85 indicates the year and number of trees with EPS exceeding 0.85; R1 is the all-series Rbar; R2 is the within-trees Rbar; R3 is the among-trees Rbar.