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Table 8

Number of duplicates found in NIST and VALD-based repositories.

Repository Initial matches Final matches
BRASS 3589 2982
VALD3 6351 3394
NIST 388 0a

Notes. Initial matches are based purely on identical upper and lower configurations and upper and lower J-values for a given ion. The literature checked matches have been cleaned of potential hyperfine, isotopic, and forbidden E2–M1-pair transitions. (a) All NIST duplicates are lines with either an undesignated upper or lower energy level and so we cannot conclude they are duplicate transitions.

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