By having the contract over to appear on paper, save regularly every minute. Know the earthquake waves arriving at the station when the RADIUS measurement of earthquake waves and earthquake waves around the world.
The alarm time appears regularly on paper records every minute. Keeping in mind that earthquake waves When arriving at the station Radius measuring seismic waves And can detect earthquakes worldwide.
The signal time appear on the paper regularly every minute. The seismic waves. Arriving at the station? Radius measurement of seismic waves. And can check the seismic waves all over the world.