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Table 1 Statistical description of leaf width, maximum leaf width, leaf length and half-leaf tipping length ratio in tree age groups, using mean, standard deviation, standard error, 95% confidential intervals (lower and upper value), median, minimum and maximum value

From: Half-leaf width symmetric distribution reveals buffering strategy of Cunninghamia lanceolata

Leaf parameter Tree age (year) N* Mean ± Standard Deviation** Standard Error CV%*** 95% Confidence Interval  
[Lower, Upper] Median [Minimum, Maximum]
Width (cm) 2 386 0.241 ± 0.098 ab 0.005 40.664 [0.231, 0.251] 0.252 [0.002, 0.473]
5 367 0.234 ± 0.093 ab 0.005 39.744 [0.225, 0.244] 0.24 [0.004, 0.437]
10 804 0.234 ± 0.09 a 0.003 38.462 [0.228, 0.24] 0.246 [0.01, 0.434]
13 452 0.23 ± 0.081 ac 0.004 35.217 [0.223, 0.238] 0.247 [0.005, 0.361]
23 861 0.222 ± 0.08 c 0.003 36.036 [0.217, 0.228] 0.236 [0.012, 0.388]
30 740 0.242 ± 0.084 b 0.003 34.711 [0.236, 0.249] 0.258 [0.013, 0.387]
Total 3610 0.233 ± 0.087 0.001 37.339 [0.23, 0.236] 0.246 [0.002, 0.473]
Maximum leaf width (cm) 2 18 0.346 ± 0.055 a 0.013 16.021 [0.319, 0.374] 0.335 [0.277, 0.473]
5 18 0.330 ± 0.042 ab 0.010 12.699 [0.310, 0.351] 0.326 [0.277, 0.437]
10 18 0.331 ± 0.048 ab 0.011 14.628 [0.307, 0.356] 0.326 [0.262, 0.434]
13 18 0.320 ± 0.026 ab 0.006 8.096 [0.307, 0.333] 0.328 [0.266, 0.361]
23 18 0.334 ± 0.034 ab 0.008 10.176 [0.317, 0.351] 0.334 [0.278, 0.387]
30 18 0.310 ± 0.040 b 0.009 12.925 [0.290, 0.330] 0.311 [0.204, 0.388]
Total 108 0.329 ± 0.043 0.004 12.970 [0.321, 0.337] 0.327 [0.204, 0.473]
Length (cm) 2 18 4.32 ± 1.075 ab 0.253 24.884 [3.785, 4.854] 4.240 [2.881, 6.823]
5 18 3.977 ± 0.904 a 0.213 22.731 [3.527, 4.426] 3.95 [2.433, 6.421]
10 18 4.518 ± 0.99 ab 0.233 21.912 [4.025, 5.01] 4.311 [2.76, 6.158]
13 18 4.887 ± 1.169 b 0.276 23.921 [4.306, 5.469] 4.430 [3.702, 7.826]
23 18 4.484 ± 0.899 ab 0.212 20.049 [4.036, 4.931] 4.690 [2.879, 6.092]
30 18 4.024 ± 0.424 a 0.100 10.537 [3.814, 4.235] 4.110 [3.225, 4.887]
Total 108 4.368 ± 0.97 0.093 22.207 [4.183, 4.553] 4.243 [2.433, 7.826]
Half-leaf tipping length ratio 2 18 0.34 ± 0.051 ab 0.012 15.000 [0.315, 0.366] 0.348 [0.191, 0.425]
5 18 0.328 ± 0.075 ab 0.018 22.866 [0.291, 0.365] 0.345 [0.183, 0.41]
10 18 0.303 ± 0.08 a 0.019 26.403 [0.264, 0.343] 0.319 [0.123, 0.409]
13 18 0.365 ± 0.051 bc 0.012 13.973 [0.34, 0.391] 0.362 [0.272, 0.441]
23 18 0.381 ± 0.104 c 0.024 27.297 [0.33, 0.433] 0.408 [0.1, 0.525]
30 18 0.361 ± 0.106 c 0.025 29.363 [0.308, 0.414] 0.358 [0.155, 0.593]
Total 108 0.347 ± 0.083 0.008 23.919 [0.331, 0.362] 0.352 [0.1, 0.593]
  1. * N = sample size. **The differences of the means between tree age groups were tested using a One-Way ANOVA test (Fisher LSD test); different letters denote statistically significant (p < 0.05) differences between the means. *** CV = coefficient of variation