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Texas Real-Time Water Quality


NRTWQ Home >> Texas >> View Data >> 08068500
USGS station:

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Constituent:
Time period:
Model Form:

Model Form #1

log10(Atz) = - 0.8096 - 0.2253 log10(Q) + 0.7473 log10(TURB) + 0.4027 sin(2π D / 365) - 0.0718 cos(2π D / 365) - 0.0105 sin(4π D / 365) - 0.2353 cos(4π D / 365)

where:

Model Calibration

Basic Data

Number of measurements: 58
Mean squared error: 0.058564
Multiple R2: 1.001
Bias correction (smearing) factor: 1.0696

Explanatory Variables

VariableValueStandard error
Intercept-0.80960.1537
log10(Q) -0.22530.076
log10(TURB) 0.74730.1359
sin(2π D / 365) 0.40270.0451
cos(2π D / 365) -0.07180.0489
sin(4π D / 365) -0.01050.0497
cos(4π D / 365) -0.23530.0486

Correlation Matrix

Interceptlog10(Q) log10(TURB) sin(2π D / 365) cos(2π D / 365) sin(4π D / 365) cos(4π D / 365)
Intercept10.0223-0.6761-0.2079-0.1187-0.4198-0.0427
log10(Q) 0.02231-0.73760.0807-0.08640.17630.1573
log10(TURB) -0.6761-0.737610.07910.16810.1588-0.0654
sin(2π D / 365) -0.20790.08070.079110.00310.19040.0994
cos(2π D / 365) -0.1187-0.08640.16810.003110.05820.1181
sin(4π D / 365) -0.41980.17630.15880.19040.058210.1052
cos(4π D / 365) -0.04270.1573-0.06540.09940.11810.10521