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Color of quakes reflects depth (red=shallow to blue=deep).
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The total number of quakes above magnitude 2 that occurred during the 3 days in or near Santa Maria Island was 2. This is compared to the average number (Ø) of 0.8 quakes obtained from the 100 preceding 3 days intervals with a standard mean deviation (σ) of 0.9 (which is a measure of the typical amount of variation, or spread, of quake numbers during such a time interval).
Interpretation: There is a weak increase in detected quakes during the past 3 days. In particular, there was a strong increase in smaller quakes of magnitudes around 2.
BLACK = Number of quakes within normal statistical range
RED = Significantly lower than normal number of quakes
GREEN = Significantly higher than normal number of quakes
Latest confirmed earthquakes in or near Santa Maria Island past 3 days
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