highly significantp < 10 −8
Using the selected model, the R, G, B variable coefficients ± SEM were all found to be highly significant ( p < 10 −8 ) and estimated at β 1 = 0.080 ± 0.0152, β 2 = −0.722 ± 0.0174, β 3 = 0.543 ± 0.0140, respectively, implying a minor contribution of the R variable to positive pixel predictability and a substantial but reciprocal effect of the G and B variables.