A 1.0 #regions in PPM
# low field   high field  bias        slope
  13.178449630737305  5.749226  0.0  0.0  # for region 1
  -76.422958  -84.751908  0.0  0.0  # for region 2
  -108.0069313922598  -108.46817095692425  0.0  0.0  # for region 3
  -129.73643977200743  -130.17205491641275  0.0  0.0  # for region 4