A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.896225001717219  7.684600881068181  -0.0  -0.0  # for region 1
  7.195220102067281  6.957142966337114  -0.0  -0.0  # for region 2
  3.9150462320071973  3.7695546490609835  -0.0  -0.0  # for region 3
  3.359532915303473  3.21404133235726  -0.0  -0.0  # for region 4