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Response table for signal-to-noise ratios (corrosion rate).
| Smaller is better | ||||
|---|---|---|---|---|
| Level | Reinforcement (%) | NaCl (%) | pH value | Exposure time (hrs) |
| 1 | 18.25 | 15.63 | 20.20 | 19.26 |
| 2 | 19.63 | 17.22 | 17.64 | 17.23 |
| 3 | 17.97 | 20.22 | 17.68 | 18.67 |
| 4 | 17.35 | 20.14 | 17.68 | 18.05 |
| Delta | 2.28 | 4.59 | 2.56 | 2.03 |
| Rank | 3 | 1 | 2 | 4 |
