List of quality assesment flags used to mark records with quality issues. Logical values tests QA_LRviolations flag rule violated 17 Emission values >= 0 (allowed values -1, -2,-3, or -5 in special cases, according to the Data Dictionary) 21 Cross records check: NP = NP1 + NP2 + NP3 + NP4 + NP5 + NP6 + NP7 + NP8 22 Cross records check: U1 = U11 + U12 + U13 + U14 23 Cross records check: U2 = U21 + U22 + U23 + U24 24 Cross records check: U = U1 + U2 25 Cross records check: I = I3 + I4 26 Cross records check: O = O5 + O6 27 Cross records check: PT = U + I + O