Model Form #1
log10(TIN) =
- 0.8938 - 0.0288 log10(Q)
+ 0.0289 sin(2π D / 365)
- 0.1911 cos(2π D / 365)
where:
- TIN is computed diss. nitrate + nitrite, in milligrams per liter as nitrogen
- Q is computed discharge, in cubic feet per second
- D is day of year, in the range of integers 1 through 365
Model Calibration
Basic Data
| Number of measurements: | 51 |
|---|---|
| Mean squared error: | 0.063504 |
| Multiple R2: | 0.6412 |
| Bias correction (smearing) factor: | 1.0758 |
Explanatory Variables
| Variable | Value | Standard error |
|---|---|---|
| Intercept | -0.8938 | 0.1251 | log10(Q) | -0.0288 | 0.0596 | sin(2π D / 365) | 0.0289 | 0.0504 | cos(2π D / 365) | -0.1911 | 0.059 |
Correlation Matrix
| Intercept | log10(Q) | sin(2π D / 365) | cos(2π D / 365) | |
|---|---|---|---|---|
| Intercept | 1 | -0.9572 | -0.0923 | 0.4401 |
| log10(Q) | -0.9572 | 1 | 0.0703 | -0.4678 |
| sin(2π D / 365) | -0.0923 | 0.0703 | 1 | -0.073 |
| cos(2π D / 365) | 0.4401 | -0.4678 | -0.073 | 1 |