A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.389936  7.088659  0.0  0.0  # for region 1
  5.626521  4.97846  0.0  0.0  # for region 2
  4.331655  4.035085  0.0  0.0  # for region 3
  3.564966  3.236071  0.0  0.0  # for region 4
  2.55192  2.329728  0.0  0.0  # for region 5
  2.329414  2.139232  0.0  0.0  # for region 6
  2.138918  0.332194  0.0  0.0  # for region 7