Improved Indium-Free Transparent ZnO/Metal/ZnO Electrode through a Statistical Experimental Design Method

Table 3

ratio responses for each experimental parameter at each level.

Experimental parameters	Mean ratio for resistance (dB)			Mean ratio for (dB)
	Level 1	Level 2	Level 3	Level 1	Level 2	Level 3
	−22.77	−23.21	−15.56	34.07	34.35	35.31
	−39.41	−9.49	−12.64	33.35	36.25	34.13
	−22.90	−21.96	−16.68	34.56	34.45	34.72