A 1.0 #regions in PPM
# low field   high field  bias        slope
  8.229748  7.66956  0.0  0.0  # for region 1
  7.305202  6.899733  0.0  0.0  # for region 2
  4.443692  4.122957  0.0  0.0  # for region 3
  3.697089  3.09014  0.0  0.0  # for region 4
  2.761873  2.130445  0.0  0.0  # for region 5
  1.518789  1.231006  0.0  0.0  # for region 6