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Hewitt Schlereth and I are seriously at cross-purposes here.

He DOESN'T NEED a spreadsheet program! He wasn't intended to use a 
spreadsheet program. That was provided just to allow anyone who was doubtful 
about the way the data had been generated, to see what it was based on. I 
regret having supplied it in the first place. Hewitt, forget the 
spreadsheet, please.

All he needs is the table of altitudes-around-noon that has been attached to 
various messages from me. I attach it again, to this message, as a .doc 
document, noon2a.doc. Here, I have cut it down, from 20 sets of simulated 
observations to just 8 sets, which should look a bit less daunting. It 
should still be more than enough to give a general idea of the scatter. In 
fact, I would prefer anyone who is still looking at this test to concentrate 
on these 8 numbers rather than on the original set of 20.

For each, or any, of this set of 8 "noons", the test is to deduce the 
original lat and long from which that row in the data set was created. In 
each case it will be between N55º30' and N56º30', and between 9ºW and 11ºW. 
The speed will always be around 10 knots Northerly, with a standard 
deviation of +/- 1 knot rms, but you are not asked to deduce it.

George.

contact George Huxtable, at  george@hux.me.uk
or at +44 1865 820222 (from UK, 01865 820222)
or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK. 

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