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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Averaging
From: George Huxtable
Date: 2004 Oct 23, 17:13 +0100
From: George Huxtable
Date: 2004 Oct 23, 17:13 +0100
Jim Thompson said- >And then, to average a run of acceptable sights: > >4. Average time by adding up the minutes and seconds and dividing by the >number of sights, then adding that average to the whole hour. >5. Average altitude by adding up the minutes and seconds and dividing by the >number of sights, then adding that average to the whole degrees. BEWARE. That advice could lead your readers into serious trouble, if they try to average that way a set of readings that spans a change-of-degrees, or a change-of hours! George. ================================================================ contact George Huxtable by email at george@huxtable.u-net.com, by phone at 01865 820222 (from outside UK, +44 1865 820222), or by mail at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK. ================================================================