Repeated measures over two factors (period and dial).
Source: Data of table 7.13 from Winer, B.J., D. R. Brown, and K. M. Michels. 1991. Statistical Principles in Experimental Design. 3rd ed. New York: McGraw-Hill.
anova sc no / su|no pe no#pe / pe#su|no di no#di / di#su|no pe#di no#pe#di, rep(per di)