In this question, the arrivals of the P and S waves are marked. When (according to the x axis) did the S waves first arrive at this recorder (APPROXIMATELY)? PSP Seismogram P 00 70 14.0 210 280 350 Time (seconds since 5 Jan 1998 18:14:11.444 UTC) O- 21 seconds 7 seconds 2, - 12.5 seconds -24.5 seconds O- 10.5 seconds

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