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Estimated parameters and evaluation criteria for the linear and polynomial equations for HMP 140A capacitive sensor using 5 salt solutions.
| Linear | 2nd Order | |
| b0 | 0.226512 | 2.911321 |
| b1 | 1.023088 | 0.814217 |
| b2 | 0.00155423 | |
| R 2 | 0.9981 | 0.9995 |
| s | 1.4386 | 0.7890 |
| Residual plots | clear pattern | Uniform distribution |
