A 1.0 #regions in PPM
# low field   high field  bias        slope
  5.187765059797209  4.949421992533798  -0.0  -0.0  # for region 1
  3.6816397198560837  3.4787945562276494  -0.0  -0.0  # for region 2
  2.7536230962559967  2.5507779326275624  -0.0  -0.0  # for region 3
  2.236367929003489  1.8661755053815963  -0.0  -0.0  # for region 4
  1.7546106653859574  1.551765501757523  -0.0  -0.0  # for region 5
  1.551765501757523  1.29820904722198  -0.0  -0.0  # for region 6
  1.29820904722198  1.1004350126842566  -0.0  -0.0  # for region 7
