Saturday

August 30, 2014

August 30, 2014

Posted by **Mike** on Monday, April 30, 2007 at 12:36am.

The derivation is rather complicated. You will find it at

http://mintaka.sdsu.edu/GF/explain/atmos_refr/integrate.html

What you are looking for it the and "r" in that reference. They derive a formula for it.

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