Cannon Point 1999/05/19 11:10:00 NZST SEISMOGRAPH DRUM RECORDING

This image represents one days recording of the seismometer located near Cannon Point close to Upper Hutt. Each horizontal line represents 30 minutes, the vertical lines are spaced one minute apart. The time at the very bottom right hand corner of the recording is displayed at the top of the image. As this site uses FM radio telemetry, it is prone to radio interference which usually looks like short bursts of blocky signal.

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This is: http://www.oocities.org/RainForest/6783/latest_drum.html#top