A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.394374228177759  7.174611357759889  -0.0  -0.0  # for region 1
  7.084120764058413  6.799721755282345  -0.0  -0.0  # for region 2
  4.886492059879708  4.640874734118559  -0.0  -0.0  # for region 3
  3.852313846148553  3.6713326587456008  -0.0  -0.0  # for region 4
  3.438642560656091  3.2447341455814995  -0.0  -0.0  # for region 5