Dan wrote:

It's interesting what can be learned from looking at a bunch of data...

Sure enough, BUT: Never forget that this same methodology has suckered many "researchers" into claiming causal relationships between the birth rate in some small Peruvian village and the price of raw steel in Europe, and other such nonsense. Data mining is a thousand times more fraught with peril than simulating the operation of electronic circuits, and trusting simulations bites many engineers in the ass every day.

The really interesting thing is what's going on with the GPS temperature. You can see it ramp temp slowly, then drop 1/2 deg F, then ramp up slowly, and drop again.

What is the time scale of this cycle? Could it be associated with the lab HVAC system? [I asked in another message what, exactly, is being measured and reported as "the GPS temperature," and how much thermal isolation there is between the various subsystems in the test setup.]

Best regards,

Charles



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