A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.735918504503124  7.612930928914839  16000.0  -0.0  # for region 1
  7.612930928914839  7.428449565532411  16000.0  -0.0  # for region 2
  7.428449565532411  7.268565717267641  16000.0  -0.0  # for region 3
  7.231669444591155  7.0348893236498995  16000.0  -0.0  # for region 4
  2.3736602088538996  2.262971390824443  16000.0  -0.0  # for region 5
  1.9800999669713877  1.8325148762654457  16000.0  -0.0  # for region 6
