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    Re: Zero-Altitude Shot
    From: Paul Hirose
    Date: 2019 Sep 8, 20:50 -0700

    On 2019-09-08 14:31, Tony Oz wrote:
    > You made a notice here:[BEGIN QUOTE]
    > If (altitude < 0) or (X < 90), replace Z with its supplement:
    > Z = 180 - Z
    > Do the adjustment only when EXACTLY ONE of the conditions is true.[END QUOTE]
    > Could you please give an example when both conditions are true and the Z 
    must not be altered. (this is how I understand your warning)
    The sunset sight reduction at the end of that message is such an
    example: "No Z adjustment is necessary since (altitude < 0) and (x < 90)."
    > By the way, how does your implementation work with the "folded" scales by Gary LaPook?
    I don't know. I know nothing about his folded scales.

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