Model Form #1
log10(FCB) =
2.19 + 0.04 TEMP
+ 0.76 log10(TURB)
where:
- FCB is computed fecal coliform bacteria, in colonies per 100 milliliters
- TEMP is water temperature, in degrees Celsius
- TURB is turbidity, in formazin nephelometric units
Model Calibration
Basic Data
| Number of measurements: | 149 |
|---|---|
| Mean squared error: | 0.3136 |
| Multiple R2: | 0.54 |
| Bias correction (smearing) factor: | 2.29 |
Explanatory Variables
| Variable | Value | Standard error |
|---|---|---|
| Intercept | 2.19 | 0.15 | TEMP | 0.04 | 0.01 | log10(TURB) | 0.76 | 0.08 |
Correlation Matrix
| Intercept | TEMP | log10(TURB) | |
|---|---|---|---|
| Intercept | 1 | -0.378 | -0.712 |
| TEMP | -0.378 | 1 | -0.314 |
| log10(TURB) | -0.712 | -0.314 | 1 |
Reference
- Baldwin, A.K., Robertson, D.M., Saad, D.A., and Magruder, Christopher, 2013, Refinement of regression models to estimate real-time concentrations of contaminants in the Menomonee River drainage basin, southeast Wisconsin, 2008–11: U.S. Geological Survey Scientific Investigations Report 2013-5174, 113 p., seven appendixes