[time-nuts] Modified Total Deviation calculation

Tom Van Baak tvb at LeapSecond.com
Mon Jan 18 16:23:15 UTC 2010


> TOTdev  0.2922318781 0.0913474326 0.0340653025
> MTOTdev 0.2303857898 0.0555288598 0.0195467513
> HTOTdev 0.2093297293 0.0958776504 0.0305163951

> The MTOTdev numbers according to page 118 (of PDF, page number 108 
> according to the printed pagenumbers) should be
> 
> Modified Total Dev 2.418528e-01 6.499161e-02 2.287774e-02
> 
> Do anyone happend to have an implementation (in source) of MTOTdev at 
> hand giving the NIST SP1065 numbers?
> 
> Please note that W. Riley has about the same document in his Handbook, 
> and it reflects the same number. I would also suspect that a STABLE32 
> run would give those numbers.

Almost but not quite; Stable32 gives:

Tot Dev (1,10,100) 2.9223e-01, 9.1347e-02, 3.4065e-02
Mod Tot Dev (1,10,100) 2.0664e-01, 5.5529e-02, 1.9547e-02
Had Tot Dev (1,10,100) 2.9439e-01, 9.6148e-02, 3.0504e-02

I don't use total deviation here myself but I'll look into it for you.

/tvb





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