P    #regions in PPM
# 2011-05-12 08:22:15 -0500  mfjofre@kerry
# low field   high field   mi   maxi
  3.4186383419210222  3.2483715295607536  0.178  1.229  # for region 1
  3.205804826470686  3.083425555086743  9.630  16.398  # for region 2
  2.52739799597274  1.902199544337378  0.082  2.047  # for region 3
