highly significantP < 0.01
\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\upsigma }_{{\max}}$$\end{document} and S ANOVA results are shown in Tables 7 and 8 , where P -value is the probability, and the significance of the model and factors can be judged by the P -value, the model is extremely significant when P < 0.0001, highly significant when P < 0.01, significant when P ≤ 0.05, and non-significant when P > 0.05.