A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.446854231648557  7.309858487298506  -0.0  -0.0  # for region 1
  4.37067706306102  4.283497953020078  -0.0  -0.0  # for region 2
  3.910605793265123  3.799250963632995  -0.0  -0.0  # for region 3
  3.7399105610000847  3.6835005486206516  -0.0  -0.0  # for region 4
  3.668115999789897  3.5655523409182  -0.0  -0.0  # for region 5