A 1.0 #regions in PPM
# low field   high field  bias        slope
  11.320846286099684  10.62466566193702  -0.0  -0.0  # for region 1
  8.243411481562452  7.396919131728304  -0.0  -0.0  # for region 2
  4.794152934574709  4.71504150001077  -0.0  -0.0  # for region 3
  4.050505449673682  3.9318382978277726  -0.0  -0.0  # for region 4
  3.821082289438258  3.726148567961531  -0.0  -0.0  # for region 5