Menu

CP002

Attribute: TDNCODE

code  description    
*    Value is below detection limit for analysis (used beginning in 1991)     
A    Accepted value     
D    Derived value - mathematically determined from other analytical measurements     
D*    Derived value - mathematically determined from other analytical measurements, one or more of which were below the detection limit     
DE    Derived value - mathematically determined from other analytical measurements, one or more of which were estimated values     
DQ    Derived value - mathematically determined from other analytical measurements, one or more of which were questionable values     
E    Estimated value     
N    No analytical measurement or no derived value calculated due to missing analytical components     
Q    Value is questionable (used beginning in 1991)