P    #regions in PPM
# 2011-07-06 08:04:44 -0500  mfjofre@kerry
# low field   high field   mi   maxi
  162.36608045265922  139.77114573756808  1.195  15.531  # for region 1
  126.31894191783077  117.80528282305535  0.942  3.713  # for region 2
  92.5455668516719  84.41961464030558  1.472  16.390  # for region 3
  80.25631813695124  62.54976794798637  0.736  17.708  # for region 4