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    Re: Latitude by Lunar Distance
    From: Frank Reed CT
    Date: 2006 Nov 12, 19:22 EST
    George, you wrote:
    "That assumption, of "no underlying bias", is a big one, and an
    unjustified one. You can halve the error by taking four observations,
    but only when those observations are all statistically independent."
     
    It is no "assumption", George. It works in practice, again and again. Or I should say, it works 'for me' again and again, and that's why I recommend it. Also, in the log books of vessels from the early 19th century, you frequently find references to averaging four or more observations. This was standard historical practice.
     
    -FER
    42.0N 87.7W, or 41.4N 72.1W.
    www.HistoricalAtlas.com/lunars

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