A 1.0 #regions in PPM
# low field   high field  bias        slope
  7.943202427047657  7.788464717429846  -0.0  -0.0  # for region 1
  7.633727007812035  7.466094489059405  -0.0  -0.0  # for region 2
  7.246882733767506  7.156619069823782  -0.0  -0.0  # for region 3
  4.190812968815728  4.07475968660237  -0.0  -0.0  # for region 4
  2.849752818794695  2.7465943457161544  -0.0  -0.0  # for region 5
  2.398434499076078  2.269486407727902  -0.0  -0.0  # for region 6
  1.5344822870432975  1.3668497682906684  -0.0  -0.0  # for region 7