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In a composite of 10 volcanoes the average monthly mean temperature anomaly three months after the eruption is 0.5C colder than the monthly mean temperature

In a composite of 10 volcanoes the average monthly mean temperature anomaly

three months after the eruption is 0.5C colder than the monthly mean temperature

anomaly one month before the eruption.

The standard deviation of the monthly

anomalies is 2.0C.

Is this result significant?

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