Table 2 : Standard L9 orthogonal arrays.

Exp. No. Independent Variables
A B C
1 1 1 1
2 1 2 2
3 1 3 3
4 2 1 2
5 2 2 3
6 2 3 1
7 3 1 3
8 3 2 1
9 3 3 2

R Tjandrawinata et al.Biochemical Compounds  2013 1:1DOI : 10.7243/2052-9341-1-1