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Table 6 The mean number of eruptions per century during different historical time periods

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

Magnitude 1900 to 2013 AD: Mean eruptions per century 1500 to 1900 AD: Mean eruptions per century 450 to 1500 AD: Mean eruptions per century 450 to 1500 AD rate as percentage of 1900 to 2013 AD rate
4-4.9 56 21 7.8 14%
5-5.9 9 6.5 3.24 36%
6-6.9 4 1.25 1.14 29%
7-7.9 - - 0.19  
  1. The mean number of eruptions per century during the historical period and the percentage of eruptions recorded at about 1 ka when compared to the most recent period of activity.