Notation	Name	Description	Status
estimate	Estimate	The data is an estimate only, not a direct measurement.	stable
good	Good	The data has been examined and represents a reliable measurem...	stable
missing	Missing	The data is missing.	stable
poor	Poor	The data should be considered as low quality and may have bee...	stable
suspect	Suspect	The data should be treated as suspect.	stable
unchecked	Unchecked	The data has not been checked by any qualitative or quantitat...	stable