Table 3. Data quality requirements (Pedigree)

Category Indicator score
1 2 3 4 5
Time coverage Less than 3 years of difference to year of study Less than 5 years of difference Less than 7 years of difference Less than 10 years of difference More than 10 years of difference
Geographical coverage Data that reflects domestic production (KR) Regional data that closely resembles domestic Other non-similar data
(RoW, RER, GLO, EU) (US, JP) (CN, IN)
Technology coverage Data with the same technique Data with partially the same technique Data with similar techniques in principle Data with different techniques applied in principle Data with other non-similar techniques