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TIME:45 minutes Materials:Activity sheets,compass, pencil and ruler Time Distance Comput Seismic difference in of ed Recording the arrival epicenter Distance stations in P and S from the on the waves station map (sec) (km) (cm) 1.Batangas 24 2.Puert 25.6 Princesa 3.Cagayan 22.4 Procedures: 1. Use the data show in the 3 Seimic Recording station​