Table 6. Precision (expressed as C.V.) and day effect (expressed as variance ratio, V.R.) for starch content of the internal reference and absorbance of the glucose standards.

	Mean	C.V./%	Variance (S2)	V.R.
Internal Reference (SC)	4.852	2.1	0.0106	-
Day	-	-	0.1060	10.0**
Glucose standard (Absorbance)	0.475	0.8	1.43·10−6	-
Day	-	-	1.07·10−3	75**

In an F-test the V.R. was deemed significant at p<0.01 (**). n = 3, days  = 8.