A 1.0 #regions in PPM
# low field   high field  bias        slope
  180.16901344112313  164.1539900241344  -0.0  -0.0  # for region 1
  112.67712904095637  93.23031489175578  -0.0  -0.0  # for region 2
  89.7985241595439  50.90489586114273  -0.0  -0.0  # for region 3
  34.31790732211869  11.43930244070623  -0.0  -0.0  # for region 4
