A 1.0 #regions in PPM
# low field   high field  bias        slope
  4.598403558906413  4.464218943270536  0.0  0.0  # for region 1
  3.592018941637333  3.524926633819394  0.0  0.0  # for region 2
  2.0256716014262257  1.9121307728112527  0.0  0.0  # for region 3
  1.4166798843095516  1.2799147952960612  0.0  0.0  # for region 4
  0.9599360964720459  0.8644585815003639  0.0  0.0  # for region 5
