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    Re: 1984 Bowditch question
    From: Robin Stuart
    Date: 2016 Jul 26, 07:07 -0700

    Not only do the number of decimal places in the constants not make sense but the use of an explicit arctangent function, in what Stan refers to as the “exact” formula, for typical small dip short angles is quite unnecessary and misleading in terms of overall accuracy. In the attached pdf I suggest where the arctangent may have come from.

    Robin Stuart



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