On Thursday, October 22, 2015 at 9:17:08 PM UTC-4, Karl Striedieck wrote:
The unsung, self-effacing, gift to contest soaring who handles the PRL,
also manages the colossal World Wide Turnpoint Exchange. And colossal
is no exaggeration considering the number of countries covered with
all the turnpoints and landing points to keep up to date.

He has been doing this quietly for decades and we are all in his debt.

If you are curious about his "day job" Google John Leibacher.

And, while you're at it, send him an atta boy. His e-mail is his name
with a dot between the two names at gmail.

KS

Another voice of thanks to John Leibacher for his tireless work supporting
Soaring. We should not take for granted his contributions!

Calculating the PRL seems like a 2-minute exercise, until one realizes
that the quality of the input data is, um, variable. Name mis-matches,
missing SAA numbers, missing data, trying to keep this consistent over
a 3-year interval... are among the things that have made this a gnarly
business.

Thanks again John for all your contributions!
Best Regards, Dave