Correction:
The first derivative should be: Offset = -3E-14 * X + 2.8E-12 so the offset for today 20 April (day # 110) is: Offset = -3E-14* 110 + 2.8E-12 = -5E-13.
Brooke
Brooke Clarke wrote:
Hi Rick:
I agree.
It's just that my FTS4060 IS drifting.
The Excel equation and fit for a month of data as of this morning are:
y = -1.2954x2 + 243.1x - 10631
R2 = 0.9607
Where y is in ns, x is the Day of Year and R2 is the quality of the fit (very good).
The first derivative (after dividing by 86400) gives: Offset = -3E-14 * X + 243 i.e. minus 3E-14 per day.
I'll keep watching and post from time to time, maybe this will stabilize???
Have Fun,
Brooke Clarke, N6GCE
-- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com
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