L20 (SeaDataNet measurand qualifier flags)

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ConceptID Preferred label Alt label Definition Modified 
0no quality controlnoneNo quality control procedures have been applied to the data value. This is the initial status for all data values entering the working archive.5/17/2007 11:47:30
1good valuegoodGood quality data value that is not part of any identified malfunction and has been verified as consistent with real phenomena during the quality control process.5/12/2009 10:11:55
2probably good valueprobably_goodData value that is probably consistent with real phenomena but this is unconfirmed or data value forming part of a malfunction that is considered too small to affect the overall quality of the data object of which it is a part.5/17/2007 11:47:30
3probably bad valueprobably_badData value recognised as unusual during quality control that forms part of a feature that is probably inconsistent with real phenomena.5/17/2007 11:47:30
4bad valuebadAn obviously erroneous data value.5/17/2007 11:47:30
5changed valuechangedData value adjusted during quality control. Best practice strongly recommends that the value before the change be preserved in the data or its accompanying metadata.5/17/2007 11:47:30
6value below detectionBDThe level of the measured phenomenon was less than the limit of detection (LoD) for the method employed to measure it. The accompanying value is the detection limit for the technique or zero if that value is unknown.4/4/2018 17:35:21
7value in excessexcessThe level of the measured phenomenon was too large to be quantified by the technique employed to measure it. The accompanying value is the measurement limit for the technique.5/12/2009 10:15:02
8interpolated valueinterpolatedThis value has been derived by interpolation from other values in the data object.5/17/2007 11:47:30
9missing valuemissingThe data value is missing. There should be no accompanying value in ODV format files. The accompanying value in SeaDataNet NetCDF data must be the absent data representation specified by the _FillValue parameter attribute and lie outside the range of data not flagged bad (4) or probably bad (3).5/9/2019 19:08:07
Avalue phenomenon uncertainID_uncertainThere is uncertainty in the description of the measured phenomenon associated with the value such as chemical species or biological entity.5/17/2007 11:47:30
Bnominal valuenominalThe data value is a numerical data value that was the intended or targetted value rather than the measured value (e.g. instrument target depth).7/22/2020 10:09:48
Qvalue below limit of quantificationBelowLOQThe level of the measured phenomenon was less than the limit of quantification (LoQ). The accompanying value is the limit of quantification for the analytical method.6/16/2020 17:41:43
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