Notation	Name	Description	Status
1	Sufficient and all of acceptable quality		stable
2	Sufficient but partly of acceptable quality		stable
3	Insufficient but all of acceptable quality		stable
4	Insufficient and of unacceptable quality		stable
5	Some messages not complete		stable
6	Suspect or wrongly coded groups could not be interpreted confidently		stable
7	Gross coding errors		stable
8	Transmission sequential order not observed		stable
9	Report completely garbled and thus discarded		stable
10	Deficiencies identified and rectified		stable
11	Deficiencies identified but not rectified		stable
12	Deficiencies not identified		stable
13	Measuring errors		stable
14	Mutual inconsistency		stable
15	Temporal inconsistency		stable
16	Forecast error		stable
17	Bias		stable
18	Improve system of quality control		stable
19	Expand training programmes		stable
127	Missing value		stable