A 1.0 #regions in PPM
# low field   high field  bias        slope
  8.016916883024868  7.964010852862607  -0.0  -0.0  # for region 1
  6.947223085681679  6.86951735388086  -0.0  -0.0  # for region 2
  3.911739605122049  3.863793515287502  -0.0  -0.0  # for region 3
  3.431776439233158  3.274252274809341  -0.0  -0.0  # for region 4
  2.7454211513865263  2.5766452609324366  -0.0  -0.0  # for region 5