A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.565562313203097  7.406844222716319  -0.0  -0.0  # for region 1
  7.181993594526716  7.049728519121068  -0.0  -0.0  # for region 2
  4.364747488386402  4.2060293978996235  -0.0  -0.0  # for region 3
  3.5182510057902516  3.385985930384603  -0.0  -0.0  # for region 4