A 1.0 #regions in PPM
# low field   high field  bias        slope
  12.856121303372603  12.082432960140551  -0.0  -0.0  # for region 1
  9.077943227256082  8.910310752889137  -0.0  -0.0  # for region 2
  8.549256192714179  8.394518524067768  -0.0  -0.0  # for region 3
  8.072148381054413  7.865831489525866  -0.0  -0.0  # for region 4
  6.563456111751911  6.176611940135885  -0.0  -0.0  # for region 5
  4.603445642230712  4.448707973584301  -0.0  -0.0  # for region 6
  3.7910728818370565  3.662124824631715  -0.0  -0.0  # for region 7