A 1.0 #regions in PPM
# low field   high field  bias        slope
  8.081472190683593  7.899798031282688  129375.0  2.9936974789915975  # for region 1
  1.5550915027870107  1.2959095856558422  129031.25  -0.29446407538280267  # for region 2
