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. 2016 Apr 25;4:e1856. doi: 10.7717/peerj.1856

Table 2. Descriptive statistics and inter-specific differences in perch characteristics of Coryphophylax subcristatus and C. brevicaudus.

All measurements have mm as units, except leaf area (mm2), temperature (°C), wind speed (m/s) and humidity(%).

C. subcristatus C. brevicaudus
Characteristics Mean CI Mean CI df F/H p η2
Girth 59 5.1 41.5 5.0 461 12.77 <0.001 2.60
Branch circumference 12 1.4 12.6 1.2 494 5.48 0.019 1.00
Perch height 1100.4 50.4 893 82.7 499 15.65 <0.001 3.04
Distance to trunk 514.7 55.2 358.6 77.9 484 7.92 0.005 1.61
Leaf area 12,478 1,456 7,463 862 348 17.66 <0.001 4.83
Temperature 28.6 0.2 27.73 0.34 162 17.04 <0.001 9.51
Wind speed 0 0.1 0 0 162 1.15 0.285 0.70
% Humidity 88.5 1.57 88.01 1.25 162 0.07 0.792 0.04
Distance to nearest plant 437.8 26.9 391.4 44.9 466 2.73 0.098 0.50

Notes.

Asterisks denote median values and corresponding H statistic for non-normally distributed variables.

CI
95% confidence interval
df
Degrees of freedom
F
Fisher’s F statistic
H
Kruskal-Wallis H statistic
p
Probability value
η2
Effect size in percentage