A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.471846  7.155191  0.0  0.0  # for region 1
  5.479962  5.158285  0.0  0.0  # for region 2
  3.986441  3.432843  0.0  0.0  # for region 3
  2.618138  2.273552  0.0  0.0  # for region 4
  2.13986  0.631589  0.0  0.0  # for region 5