Model Form #1
log10(TP) =
- 3.5808 + 1.2592 log10(SC)
+ 0.1678 log10(TURB)
- 0.0247 sin(2π D / 365)
- 0.0627 cos(2π D / 365)
where:
- TP is computed total phosphorus, in milligrams per liter as phosphorus
- SC is specific conductance at 25 degrees Celsius, in microsiemens per centimeter
- TURB is turbidity, in formazin nephelometric units
- D is day of year, in the range of integers 1 through 365
Model Calibration
Basic Data
| Number of measurements: | 51 |
|---|---|
| Mean squared error: | 0.0090935296 |
| Multiple R2: | 0.8838 |
| Bias correction (smearing) factor: | 1.0222 |
Explanatory Variables
| Variable | Value | Standard error |
|---|---|---|
| Intercept | -3.5808 | 0.26045 | log10(SC) | 1.2592 | 0.07907 | log10(TURB) | 0.1678 | 0.04699 | sin(2π D / 365) | -0.0247 | 0.01722 | cos(2π D / 365) | -0.0627 | 0.01973 |
Correlation Matrix
| Intercept | log10(SC) | log10(TURB) | sin(2π D / 365) | cos(2π D / 365) | |
|---|---|---|---|---|---|
| Intercept | 1 | -0.9777 | -0.8447 | -0.0966 | -0.0567 |
| log10(SC) | -0.9777 | 1 | 0.719 | 0.075 | 0.0324 |
| log10(TURB) | -0.8447 | 0.719 | 1 | 0.131 | 0.1361 |
| sin(2π D / 365) | -0.0966 | 0.075 | 0.131 | 1 | -0.0164 |
| cos(2π D / 365) | -0.0567 | 0.0324 | 0.1361 | -0.0164 | 1 |