A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.7313386863206865  7.645685371428504  -0.0  -0.0  # for region 1
  7.601752326993924  7.545351431108645  -0.0  -0.0  # for region 2
  7.402249634366512  7.307580181064626  -0.0  -0.0  # for region 3
  7.299958059537608  7.227725333228391  -0.0  -0.0  # for region 4
  7.221788396819415  7.135702818889253  -0.0  -0.0  # for region 5