SiteCodeSiteNameCTSTEPACodeLatLonElevStartEnd
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CodeNameUnitsfromSourceCodeSourceUnits
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FlagCodeDescriptionCategorySourceColumnStatusFlag
<Missing < 25% of hourly sampling periodData QualityOZONE_FV0
^Alarm high -- ozone > 120Data QualityOZONE_FV0
_Field reading less than zeroData QualityOZONE_FV0
0Level 0 validated dataQuality AssuranceQA_CODEV0
1Level 1 validated dataQuality AssuranceQA_CODEV0
1XLevel 1 data that are suspect based on manual screening. Data should be omitted from any statistical analyses.Quality AssuranceQA_CODEI0
2Level 2 validated dataQuality AssuranceQA_CODEV0
3Level 3 validated dataQuality AssuranceQA_CODEV0
BField instrument channel down for > 75% of hourly sampling periodData QualityOZONE_FI0
CInvalid data due to field calibration of instrumentData QualityOZONE_FI0
DField instrument channel down for 25% to 75% of hourly sampling periodData QualityOZONE_FI0
EExceptional event designation requested by state agency Data QualityOZONE_FV0
FField instrument power failureData QualityOZONE_FI0
GSGovernment shutdown periodQuality AssuranceQA_CODEI1
HInvalid reading - related to instrument malfunctionData QualityOZONE_FI0
IInvalid readingData QualityOZONE_FI0
JInvalid reading - related to critical criteria failuresData QualityOZONE_FI0
KNon-nominal flow value identified during automated screeningData QualityOZONE_FV0
MField data missingData QualityOZONE_FI0
PPotential problem identified during automated screening requiring further investigationData QualityOZONE_FI0
SField instrument out of DQO at time of 2nd calibrationData QualityOZONE_FV0
XRecord not obtained via daily polling; placeholder usedQuality AssuranceQA_CODEV4
YQC control points (zero/span)Data QualityOZONE_FI0