suzerain: #3038 update pexi fields

These are on an Ly=2.5 domain and have been run out quite
a bit longer.  Consequently, there's a nicer data set to
keep about for testing.

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@43558 0bd85f0b-c151-43b9-a1e9-27231104551f