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QC1-9 Combined assessment
The figure shows the algorithm applied to PP and TA.
With hourly observations the fcombi flag value is also set on TAN and TAX.
fmis - flag on missing observation fr - flag on range control (QC1-1) fs - flag on step control (QC1-2) fnum - flag on numerical control (QC1-4) fcombi - flag on combined assessment