Model Form #1
log10(ECBR) =
1.5254 + 0.7636 log10(TURB)
+ 0.0406 TEMP
where:
- ECBR is computed E. coli, in colonies per 100 milliliters
- TURB is turbidity, in formazin nephelometric units
- TEMP is water temperature, in degrees Celsius
Model Calibration
Basic Data
| Number of measurements: | 161 |
|---|---|
| Mean squared error: | 0.18818244 |
| Multiple R2: | 0.8213 |
| Bias correction (smearing) factor: | 1.69 |
Explanatory Variables
| Variable | Value | Standard error |
|---|---|---|
| Intercept | 1.5254 | 0.0843 | log10(TURB) | 0.7636 | 0.0342 | TEMP | 0.0406 | 0.0052 |
Correlation Matrix
| Intercept | log10(TURB) | TEMP | |
|---|---|---|---|
| Intercept | 1 | -0.3733 | -0.635 |
| log10(TURB) | -0.3733 | 1 | 0.7772 |
| TEMP | -0.635 | 0.7772 | 1 |
Reference
- Miller, C.V., Chanat, J.G., and Bell, J.M., 2013, Water quality in the Anacostia River, Maryland and Rock Creek, Washington, D.C.: Continuous and discrete monitoring with simulations to estimate concentrations and yields of nutrients, suspended sediment, and bacteria: U.S. Geological Survey Open-File Report 2013–1034, 37 p.