Skip to main content
. 2013 Jul 11;8(7):e69065. doi: 10.1371/journal.pone.0069065

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.