Analysis of covariance (ANCOVA) for coral growth experiment.

Coral growth data square-root-transformed and analysed for east (E) and west (W) of Similan Islands from February 2007 to February 2008. Side (E and W) and depth (7 and 20 m) as treatment factors, and initial weight of coral nubbins as covariate; factor site (rack) included as random factor; posthoc, pair wise comparisons of the adjusted group means via Tukey HSD-tests. (df = degrees of freedom; MS = means square; F = F-value; p = probability level, significance levels are *0.05>P≥0.01, **0.01>P≥0.001, ***P<0.001).