A 1.0 #regions in PPM
# low field   high field  bias        slope
  4.2173186685827275  4.178079862200283  -0.0  -0.0  # for region 1
  4.181491932320496  4.138841055817839  -0.0  -0.0  # for region 2
  3.7549831672939256  3.6969779752503116  -0.0  -0.0  # for region 3
  3.5110201536987273  3.437660646114157  -0.0  -0.0  # for region 4
  3.1988157376992774  3.120338124934389  -0.0  -0.0  # for region 5
  2.8234880244758958  2.7688949025524945  -0.0  -0.0  # for region 6
  2.6460603782248424  2.606821571842398  -0.0  -0.0  # for region 7