A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.425209734415442  7.320662183940299  -0.0  -0.0  # for region 1
  4.376061755602432  4.211772747712922  -0.0  -0.0  # for region 2
  3.860791685403511  3.494875258740509  -0.0  -0.0  # for region 3
  2.18056319562442  2.046144916442093  -0.0  -0.0  # for region 4
  2.016274187734909  1.844517497668602  -0.0  -0.0  # for region 5
  1.7399699471934587  1.463665706652008  -0.0  -0.0  # for region 6
  1.3740535205304565  1.142555373049782  -0.0  -0.0  # for region 7