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Current Flag Summary
Following is a short description of the flags currently in use. The testing procedure used for specific parameters can be found in the current daily and hourly flags specifications. The current quality control criteria flags fall into two categories:
Severe where
Flag Description
I Data value has no meaning/ignore
M Missing
S Sensor is not in service or data is out of sensor threshold
Informative where
Flag Description
A Historical average
E, T Historical average of one of the sensors used to calculate a parameter
H Daily data value flagged when corresponding hourly data is M, Q, and S. This flag is not set when the corresponding hourly data is N.
J Monthly data value flagged when some daily data are missing
K Monthly data value flagged when daily data value are flagged
L Monthly data value flagged when some daily data are missing and some are flagged
N Data value is not collected by this station
P Quality test pending
Q All quality control could not be performed because a comparison sensor is severe. This flag is not set when the comparison sensor is N
R Data is far out of historical limits
Y Data is moderately out of historical limits
If you have questions, please contact the following:
Bekele Temesgen
Department of Water Resources
Office of Water Use Efficiency
P.O. Box 942836
Sacramento, CA 94236-0001
temesgen@water.ca.gov
Simon Eching
Department of Water Resources
Office of Water Use Efficiency
P.O. Box 942836
Sacramento, CA 94236-0001
seching@water.ca.gov
Reference:
  • Eching, S.O, and D. Moellenberndt. 1998. Technical elements of CIMIS, the California Irrigation Management Information System : State of California, Resources Agency, Dept. of Water Resources, Division of Planning and Local Assistance, 63 p.
  • Meek, D.W. and Hatfield, J.L.1994. Data quality checking for single station
    meteorological databases. Agricultural and forest meteorology 69:85 -109.
  • Snyder, R.L., Pruitt, W.O., and Dong, A. 1985. An automatic weather station network
    for estimation of evapotranspiration. Presented at the ICID Conference on Crop Water
    Requirements, Paris, France, September 11-14, 1984. International Commission on
    Irrigation and Drainage.
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