A 1.0 #regions in PPM
# low field   high field  bias        slope
  8.110836371852718  7.988335663533799  -0.0  -0.0  # for region 1
  7.988335663533799  7.87872976661687  -0.0  -0.0  # for region 2
  7.653070567082017  7.466095801753139  -0.0  -0.0  # for region 3
  2.9593592167570733  2.8110688856341697  -0.0  -0.0  # for region 4