A 1.0 #regions in PPM
# low field   high field  bias        slope
  13.180246605258837  1.979077276641033  0.0  0.0  # for region 1
  9.670954939462368  7.773489096909624  0.0  0.0  # for region 2
  9.421835  7.660513  0.0  0.0  # for region 3
  5.16696  2.583098  0.0  0.0  # for region 4
  2.496756  2.023856  0.0  0.0  # for region 5
  2.023551  0.94351  0.0  0.0  # for region 6
