Model Form #1
log10(TIN) =
- 3.146 + 0.578 log10(TURB)
+ 0.418 log10(Q)
where:
- TIN is computed diss. nitrate + nitrite, in milligrams per liter as nitrogen
- TURB is turbidity, YSI model 6136, in formazin nephelometric units
- Q is computed discharge, stage-discharge rating curve, in cubic feet per second
Model Calibration
Basic Data
| Number of measurements: | 84 |
|---|---|
| Mean squared error: | 0.1225 |
| Multiple R2: | 0.46 |
| Bias correction (smearing) factor: | 1.37646 |
Explanatory Variables
| Variable | Value | Standard error |
|---|---|---|
| Intercept | -3.146 | 0.35 | log10(TURB) | 0.578 | 0.0985 | log10(Q) | 0.418 | 0.141 |
Correlation Matrix
A correlation matrix is not available for this model. Therefore, the prediction interval was calculated by assuming that there is no correlation between the explanatory variables.
Reference
- Galloway, J., 2014, Continuous Water-Quality Monitoring and Regression Analysis to Estimate Constituent Concentrations and Loads in the Red River of the North at Fargo and Grand Forks, North Dakota, 2003–12: U.S. Geological Survey Scientific Investigations Report 2014–5064, 37 p.