A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.738194026107541  7.625706650803736  -0.0  -0.0  # for region 1
  7.625706650803736  7.50853230152894  -0.0  -0.0  # for region 2
  7.414792822109103  7.269496629008356  -0.0  -0.0  # for region 3
  7.227313863269429  7.1054525400236415  -0.0  -0.0  # for region 4
  2.559087788161549  2.4137915950608018  -0.0  -0.0  # for region 5
  2.2872432978440216  2.085703417091372  -0.0  -0.0  # for region 6