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    Re: Refraction at the horizon.
    From: Marcel Tschudin
    Date: 2008 Mar 18, 14:27 +0200

    ... I notice that I focused in the sounding data on the situation near
    the horizon and not on other heights. I only realise now that in the
    second of the two cases the temperature was constant between about
    4000m and 5000m, thus at a height range below and above of the
    observer. May be it's this situation which lead to a low refraction in
    the second of the two observations.
    
    Marcel
    
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