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Table 5 The median age, T50, of eruptions in each magnitude band

From: Characterisation of the Quaternary eruption record: analysis of the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database

Magnitude Median time (T50)
50% of time covered by LaMEVE database 1.25 Ma
M ≥ 4 (entire database) 20,455
M ≥ 5 53,000
M ≥ 6 107,750
M ≥ 7 443,000
M ≥ 8 935,000
  1. The time, T50, by which 50% of eruptions of each magnitude interval have occurred. For example, 50% of recorded M≥4 eruptions are recorded in the last 20,455 years (in a database spanning 2.5 Myr).