The Quest 26

To locate this cache, you first need to locate 8 other caches
called The Quest 17 through to The Quest 24. In each of those you
will find a 5 digit number representing either the
South decimal seconds (xx.xxx) or the East decimal seconds
(yy.yyy). It won't tell you if it is South or East - that's part of
the problem you will need to solve. How will you pair 4 South with
4 East coordinates? Do it right, and ONE of those pairs will be the
correct coordinates to this cache, and the other three pairs will
point the locations for The Quest 25, 27 or 28.
NOTICE: It appears the coords here aren't too sharp. If you are
having trouble finding the cache, please subtract 6 from the East
Coords and try again. (With thanks to B&W for the new
reading)