Input (grade 3): Chronology of Events in 2007 at Nazko Cone Most of these earthquakes were magnitude 1.0 or less; some as strong as M 3.1 or 3.2 were centered 25 kilometres below the surface.
Output (grade 5): Most of these earthquakes were magnitude 1.0 or less; some as strong as magnitude 3.2 were centered 25 kilometers below the surface.