Bob McClure wrote:
> My horizontal sensors respond to tilts caused by moving around in the 
> rooms above. I believe the wiggle prior to the P-wave is such an artifact.
>
> Bob from Locust Valley 
Yes Bob, your data "seems" to look that way I agree ...
e


but look at mine .....

a



and then ....

x


and ....

v

Well,  you are right, I can't seem to find it on the professional 
equipment ....

a

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