A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.841110997891019  7.699119048231021  -0.0  -0.0  # for region 1
  7.688601126033984  7.557127098571023  -0.0  -0.0  # for region 2
  7.073302677507325  6.9523465722414  -0.0  -0.0  # for region 3
  6.810354622581402  6.689398517315477  -0.0  -0.0  # for region 4
  6.67888059511844  6.552665528753997  -0.0  -0.0  # for region 5
  5.54097815442926  5.4418741056754945  -0.0  -0.0  # for region 6
  3.5971293913866247  3.4498784806281075  -0.0  -0.0  # for region 7