P    #regions in PPM
# 2011-06-16 11:19:40 -0500  mfjofre@kerry
# low field   high field   mi   maxi
  7.254812115606372  6.83930820501539  6.850  12.861  # for region 1
  3.265649326253424  2.8600654698879024  4.026  18.050  # for region 2