A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.8895951532519275  7.789987726415051  -0.0  -0.0  # for region 1
  7.130517865977798  6.979389356294261  -0.0  -0.0  # for region 2
  4.238467748851924  4.114817150019939  -0.0  -0.0  # for region 3
  3.5583894552760076  3.4175651621618024  -0.0  -0.0  # for region 4
  2.613836269753901  2.4901856709219166  -0.0  -0.0  # for region 5