A 1.0 #regions in PPM
# low field   high field  bias        slope
  5.829352829846392  5.724821697213163  0.0  0.0  # for region 1
  3.7840270013228823  3.7038864663040734  0.0  0.0  # for region 2
  2.1010757659278987  1.9826071489435726  0.0  0.0  # for region 3
  1.439045259250783  1.2752798181253913  0.0  0.0  # for region 4
  0.9547176780501563  0.8710927719435733  0.0  0.0  # for region 5
