P    #regions in PPM
# 2011-06-16 10:36:37 -0500  mfjofre@kerry
# low field   high field   mi   maxi
  3.0221298986106393  2.9660977517983995  3.191  9.620  # for region 1
  2.3167350998803173  2.2601481793372638  4.115  15.157  # for region 2
  1.9425402184461067  1.8523894871887907  0.758  7.028  # for region 3
