A 1.0 #regions in PPM
# low field   high field  bias        slope
  8.023125766015083  7.921244803906955  -0.0  -0.0  # for region 1
  6.9788459044067706  6.876964942298643  -0.0  -0.0  # for region 2
  3.9733575222169932  3.8714765601088654  -0.0  -0.0  # for region 3
  3.451217591412837  3.272925907723613  -0.0  -0.0  # for region 4
  2.738050856655941  2.559759172966717  -0.0  -0.0  # for region 5