TP is computed total phosphorus, in milligrams per liter as phosphorus
TURB is turbidity, YSI EXO, in formazin nephelometric units
Model Archive Summary
The model archive summary for computed total phosphorus can be viewed in pdf form
here.
Model Calibration
Basic Data
Number of measurements:
30
Mean squared error:
0.02829124
Multiple R2:
0.76
Bias correction (smearing) factor:
1.07
Explanatory Variables
Variable
Value
Standard error
Intercept
-1.938
0.0134
log10(TURB)
0.717
0.07642
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.
Notes
Model derived using Tobit regression estimation (absolute maximum likelihood estimation) approach.
Regression models were updated in Kramer and others (2021) and the newest version of the model was applied beginning January 1, 2021. This model was developed using a model calibration dataset with YSI 6-Series model 6136 turbidity sensor data. The computed data uses real-time turbidity data from a YSI EXO turbidity sensor. There are known sensor differences that can affect computations. More information detailing sensor differences, models, period of application, and computed concentrations can be found in Kramer and others (2021).
