Table 3. S/N (dB) Response for Deposition Yield.

factors	level 1	level 2	level 3	level 4	maximum–minimum
concentration (g/L)	–26.79	–24.10	–17.86	–15.7	11.05
voltage (V)	–30.16	–22.48	–16.57	–15.27	14.89
time (min)	–22.91	–22.37	–19.31	–19.89	3.60