Table 1.

The average SL and S/N ratio values.

	SL			S/N
Level	A	B	C	A	B	C
1	6.87	4.93	7.46	16.56	13.45	17.20
2	7.17	7.97	6.87	16.62	18.00	16.25
3	6.91	8.05	6.61	16.31	18.04	16.04
Delta	0.30	3.12	0.85	0.31	4.59	1.16
Rank	3	1	2	3	1	2