Is that a Trimble Thunderbolt? Is there a way to compute the uncertainties?

On Sun, Dec 10, 2017 at 2:42 AM, Tom Holmes <[email protected]> wrote:
> Mark...
> You're place really moved a foot in 48 hours? Impressive and scary!
>
> From Tom Holmes, N8ZM
>
>> On Dec 9, 2017, at 8:19 PM, Mark Sims <[email protected]> wrote:
>>
>> Which gets real fun with things like solid earth tides getting involved.   
>> Lady Heather can now calculate and plot solid earth tides.   Over the last 
>> 48 hours my place moved up/down 315 mm and gravity changed 186  microgals... 
>> and that was a rather stable period.
>>
>> ------------------
>>
>>> A 1 meter change in elevation corresponds to a frequency offset of about 
>>> 1e-16. So for 1e-18 levels of performance you "only" need to know g, or 
>>> your elevation to 1 cm accuracy.
>> <tides.gif>
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