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Table 3 Criteria for applying data quality indicators to eruption dates

From: Global database on large magnitude explosive volcanic eruptions (LaMEVE)

DATING DATA QUALITY INDICATOR
VALUE    DESCRIPTION
0 Only qualitative data provided (e.g. Holocene).
1 Date reported in the literature without error and or dating method not specified OR stratigraphically dated OR reported errors >30% OR unit has multiple published dates that differ by >30%.
2 Single date (historical or geochronology) with a method and errors cited OR unit has multiple published dates that differ by 10-30% OR historical ages uncertain by more than one year.
3 Single precise historical date within a year OR multiple published dates that differ by <10%.
  1. Assigning data quality indicators to eruption dates permits users to prioritise superior analytical techniques. For multiple ages the above criteria are thus applied to those ages where there is no basis for assigning one age or method as superior to another.