Certainly Karl,

To insure the same exact parameters, I will post a graph consisting
of the results of tomorrow's recording. Hopefully, seismic activity 
will be minimal.

Charlie Plyler

Karl Cunningham wrote:
> 
> Hi Charlie --
> 
> That's very interesting.  For comparison, would it be possible to see a
> comparable chart (using the same vertical sensitivity, the same recording
> duration, and the same starting time) showing the background noise on a day
> when there were no major earthquakes?
> 
> Thanks,
> Karl Cunningham

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