Spectrogram

Tectonic: Pacific Northwest 02/28/2015(UTC)

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Pacific_northwest_20150228-0020_thumb
Pacific_northwest_20150228-0030_thumb
Pacific_northwest_20150228-0040_thumb
Pacific_northwest_20150228-0050_thumb
Pacific_northwest_20150228-0100_thumb
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Station

Code, or name, to designate a particular seismic station