A 1.0 #regions in PPM
# low field   high field  bias        slope
  8.089517965582884  7.8605693439154445  -0.0  -0.0  # for region 1
  7.873288711785857  7.6189013543775905  -0.0  -0.0  # for region 2
  7.5044270435438705  7.237320318265191  -0.0  -0.0  # for region 3
  7.16100411104271  6.843019914282377  -0.0  -0.0  # for region 4
  4.337304443810949  4.121075190013922  -0.0  -0.0  # for region 5
  4.0829170864026825  3.9430040398281356  -0.0  -0.0  # for region 6
  3.4596680607524286  3.332474382048295  -0.0  -0.0  # for region 7
  3.294316278437055  3.141683863992095  -0.0  -0.0  # for region 8