A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.477907071766805  7.306628555902023  -0.0  -0.0  # for region 1
  4.459121556948492  4.2443557023689324  -0.0  -0.0  # for region 2
  3.9138355318594193  3.795694055474513  -0.0  -0.0  # for region 3
  3.7470006091266805  3.667973540463804  -0.0  -0.0  # for region 4
  3.6703683001202547  3.5657971284552366  -0.0  -0.0  # for region 5