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Kansas Real-Time Water Quality

USGS station:

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Constituent:
Time period:
Model Form:

Model Form #2

log10(SO4R) = - 1.9 + 1.257 log10(SC)

where:

Model Archive Summary

The model archive summary for computed sulfate can be viewed in pdf form here.

Model Calibration

Basic Data

Number of measurements: 325
Mean squared error: 0.01327104
Multiple R2: 0.9
Bias correction (smearing) factor: 1.03

Explanatory Variables

VariableValueStandard error
Intercept-1.90.06502
log10(SC) 1.2570.02379

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

Notes

Model derived using Tobit regression estimation (absolute maximum likelihood estimation) approach.

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URL: http://nrtwq.usgs.gov/explore/modelinfo?site_no=07144100&pcode=99405&period=31d_all&timestep=uv
Page Contact Information: National Real-Time Water Quality Information
Page Last Modified: Wed 06 October 2010