Frequency vs. temp

[Achim Gratz]

Hal Murray writes:
> gem at rellim.com said:
>> Ths plot is NTP drift vs. temp. 
>
> No, that's a plot of temp vs time and another plot from a different file of 
> drift vs time.  If you can capture both at the same time then you can ignore 
> the time in the file and plot drift vs temp.
>   http://users.megapathdsl.net/~hmurray/ntp/slope.gif

Do you really mean "frequency drift" or rather  "frequency offset"?
>From the values it looks like you meant the NTP loop offset.

> You can probably do it with some post processing to merge 2 files.  For me, 
> it was easier to fix the data collection side.

Merging two files actually is easy, provided that the timestamps align
exactly:

join --nocheck-order -a1 -j1 ppswatch.txt loop.stats > joined.txt


Regards,
Achim.
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