A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.3660283723025906  7.312967599321084  0.0  0.0  # for region 1
  7.312339661179291  7.275919248955297  0.0  0.0  # for region 2
  7.275605279884401  7.233219455313375  0.0  0.0  # for region 3
  6.063953229279981  5.576888712871951  0.0  0.0  # for region 4
  5.175060486835326  5.048075809343232  0.0  0.0  # for region 5
  1.5227376299045063  1.4369707871134423  0.0  0.0  # for region 6
  1.2488856055540911  1.1510813111432285  0.0  0.0  # for region 7
